Weasis does not even reach the splash screen - possible wayland and flatpak interaction?

[unsafeunaudited]

Describe the bug. What happened?

Summary: The flatpak version does not open and does not even reach the splash/loading screen of Weasis.

I tried the 4.1.2 rpm installer from github and it runs without issue.

Of note, in the log below, it keeps showing X11 related errors (I am on wayland).

What version of Weasis are you running?

4.1.2

On which system the problem occurs?

Linux

Relevant log output

WARNING: package com.sun.awt not in java.desktop
27.07.2023 08:56:32.826 *INFO* [main] org.weasis.launcher.ConfigData: Starting Weasis...
27.07.2023 08:56:32.873 *INFO* [main] org.weasis.launcher.ConfigData: Initialization of the launch configuration...
27.07.2023 08:56:32.894 *INFO* [main] org.weasis.launcher.ConfigData: Properties: {weasis.user=host, weasis.name=Weasis, weasis.version=4.1.2, weasis.config.hash=-960773013, weasis.path=/home/host/.weasis, weasis.launch.type=NATIVE, weasis.codebase.url=file:/app/lib/app, weasis.pref.local.session=true, weasis.codebase.local=/app/lib/app, felix.extended.config.properties=file:/app/lib/app/conf/ext-config.properties, felix.config.properties=file:/app/lib/app/conf/config.properties, weasis.source.id=630703E9, weasis.profile=default, http.agent=Weasis/4.1.2 (Linux; 6.4.4-200.fc38.x86_64; amd64; pf:default; rv:4.1.2) Java/20.0.1}
27.07.2023 08:56:32.908 *INFO* [main] org.weasis.launcher.Singleton: Singleton server 630703E9 already running on port 41,221
27.07.2023 08:56:32.908 *INFO* [main] org.weasis.launcher.Singleton: Connect to 630703E9 on port 41,221
27.07.2023 08:56:32.915 *SEVERE* [main] org.weasis.launcher.Singleton: No server is running
java.net.ConnectException: Connection refused
	at java.base/sun.nio.ch.Net.connect0(Native Method)
	at java.base/sun.nio.ch.Net.connect(Unknown Source)
	at java.base/sun.nio.ch.Net.connect(Unknown Source)
	at java.base/sun.nio.ch.NioSocketImpl.connect(Unknown Source)
	at java.base/java.net.SocksSocketImpl.connect(Unknown Source)
	at java.base/java.net.Socket.connect(Unknown Source)
	at java.base/java.net.Socket.connect(Unknown Source)
	at java.base/java.net.Socket.<init>(Unknown Source)
	at java.base/java.net.Socket.<init>(Unknown Source)
	at org.weasis.launcher.Singleton.connectToServer(Singleton.java:170)
	at org.weasis.launcher.Singleton.invoke(Singleton.java:152)
	at org.weasis.launcher.AppLauncher.main(AppLauncher.java:39)
27.07.2023 08:56:32.916 *INFO* [main] org.weasis.launcher.Singleton: Local port of the Singleton server: 45,921
27.07.2023 08:56:32.920 *INFO* [main] org.weasis.launcher.Singleton: Remove file with same prefix 630703E9_41221
27.07.2023 08:56:32.924 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of locale.lang.code = en
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of locale.format.code = system
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.level = INFO
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.file.activate = false
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.file.number = 5
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.file.size = 10MB
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.stack.limit = 3
27.07.2023 08:56:32.925 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of org.apache.sling.commons.log.pattern = {0,date,dd.MM.yyyy HH:mm:ss.SSS} *{4}* [{2}] {3}: {5}
27.07.2023 08:56:32.935 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of weasis.linux.windows.decoration = false
27.07.2023 08:56:32.974 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of flatlaf.uiScale = null
27.07.2023 08:56:33.071 *SEVERE* [AWT-EventQueue-0] org.weasis.launcher.WeasisLauncher: Cannot register the main frame
java.awt.HeadlessException: 
No X11 DISPLAY variable was set,
or no headful library support was found,
but this program performed an operation which requires it,

	at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(Unknown Source)
	at java.desktop/java.awt.Window.<init>(Unknown Source)
	at java.desktop/java.awt.Frame.<init>(Unknown Source)
	at java.desktop/java.awt.Frame.<init>(Unknown Source)
	at java.desktop/javax.swing.JFrame.<init>(Unknown Source)
	at org.weasis.launcher.WeasisLauncher.lambda$loadProperties$12(WeasisLauncher.java:894)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
27.07.2023 08:56:33.096 *SEVERE* [main] org.weasis.launcher.WeasisLoader: Display splashscreen
java.lang.reflect.InvocationTargetException
	at java.desktop/java.awt.EventQueue.invokeAndWait(Unknown Source)
	at java.desktop/java.awt.EventQueue.invokeAndWait(Unknown Source)
	at org.weasis.launcher.WeasisLoader.open(WeasisLoader.java:165)
	at org.weasis.launcher.WeasisLauncher.loadProperties(WeasisLauncher.java:974)
	at org.weasis.launcher.WeasisLauncher.launch(WeasisLauncher.java:179)
	at org.weasis.launcher.AppLauncher.main(AppLauncher.java:42)
Caused by: java.awt.HeadlessException: 
No X11 DISPLAY variable was set,
or no headful library support was found,
but this program performed an operation which requires it,

	at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(Unknown Source)
	at java.desktop/java.awt.Window.init(Unknown Source)
	at java.desktop/java.awt.Window.<init>(Unknown Source)
	at java.desktop/java.awt.Window.<init>(Unknown Source)
	at org.weasis.launcher.WeasisLoader.initGUI(WeasisLoader.java:72)
	at org.weasis.launcher.WeasisLoader.lambda$open$3(WeasisLoader.java:168)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
27.07.2023 08:56:33.098 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of weasis.show.disclaimer = true
27.07.2023 08:56:33.098 *INFO* [main] org.weasis.launcher.WeasisLauncher: Config of weasis.show.release = true
27.07.2023 08:56:33.098 *INFO* [main] org.weasis.launcher.WeasisLauncher: Clean plug-in cache because Weasis has crashed during the previous launch
27.07.2023 08:56:33.118 *INFO* [main] org.weasis.launcher.WeasisLauncher: 
***** Configuration *****
  Last running version = 4.1.2
  Current version = 4.1.2
  Application name = Weasis
  Application Source ID = 630703E9
  Application Profile = default
  Application local codebase = /app/lib/app
  Application codebase URL = file:/app/lib/app
  Application configuration file = file:/app/lib/app/conf/config.properties
  Application extension configuration file = file:/app/lib/app/conf/ext-config.properties
  User = host
  User home directory = /home/host/.weasis
  Resources path = /app/lib/app/resources
  Preferences directory = /home/host/.weasis/preferences/host/default
  Look and Feel = org.weasis.launcher.FlatWeasisTheme
  Languages path = file:/app/lib/app/bundle-i18n/
  Languages available = en,ar,bg_BG,bs_BA,cs,de,el,es,fa,fr,hr_HR,hu_HU,it,ja,ko,ms_MY,pl_PL,pt,pt_BR,ro,ru_RU,si,sk_SK,sr_RS,sv,ta_IN,tr,uk,vi,vi_VN,zh_CN,zh-Hans,zh_TW
  OSGI native specs = linux-x86-64
  HTTP user agent = Weasis/4.1.2 (Linux; 6.4.4-200.fc38.x86_64; amd64; pf:default; rv:4.1.2) Java/20.0.1
  Operating system = Linux 6.4.4-200.fc38.x86_64 amd64
  Java vendor = Eclipse Adoptium
  Java version = 20.0.1
  Java Path = /app/lib/runtime
  Java max memory (less survivor space) = 1.8 GiB
***** End of Configuration *****
27.07.2023 08:56:33.119 *INFO* [main] org.weasis.launcher.WeasisLauncher: 
Starting OSGI Bundles...

         | | /| / /__ ___ ____ (_)__
         | |/ |/ / -_) _ `(_-</ (_-<
         |__/|__/\__/\_,_/___/_/___/

27.07.2023 08:56:35.184 *INFO* [FelixStartLevel] org.apache.sling.commons.log.internal.LogManager: LogManager: Logging set up from context
ERROR: Bundle weasis-core [22] Error starting file:/app/lib/app/bundle/weasis-core-4.1.2.jar (org.osgi.framework.BundleException: Activator start error in bundle weasis-core [22].)
java.lang.ExceptionInInitializerError
	at org.weasis.core.ui.editor.image.dockable.MeasureTool.<clinit>(MeasureTool.java:80)
	at org.weasis.core.internal.Activator.start(Activator.java:74)
	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:849)
	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2429)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2335)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1566)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:297)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.awt.HeadlessException: 
No X11 DISPLAY variable was set,
or no headful library support was found,
but this program performed an operation which requires it,

	at java.desktop/sun.awt.HeadlessToolkit.getBestCursorSize(Unknown Source)
	at org.weasis.core.api.gui.util.Feature.getCursor(Feature.java:181)
	at org.weasis.core.api.gui.util.Feature.getSvgCursor(Feature.java:167)
	at org.weasis.core.api.gui.util.ActionW.<clinit>(ActionW.java:49)
	... 8 more
ERROR: Bundle weasis-base-ui [31] Error starting file:/app/lib/app/bundle/weasis-base-ui-4.1.2.jar (org.osgi.framework.BundleException: Activator start error in bundle weasis-core [22].)
java.lang.IllegalStateException: Invalid BundleContext.
	at org.apache.felix.framework.BundleContextImpl.checkValidity(BundleContextImpl.java:491)
	at org.apache.felix.framework.BundleContextImpl.getProperty(BundleContextImpl.java:66)
	at org.weasis.core.api.service.WProperties.getProperty(WProperties.java:50)
	at org.weasis.core.internal.StreamBackingStoreImpl.<init>(StreamBackingStoreImpl.java:65)
	at org.weasis.core.internal.Activator.start(Activator.java:54)
	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:849)
	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2429)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2335)
	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:1006)
	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:992)
	at org.weasis.base.ui.internal.Activator.start(Activator.java:39)
	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:849)
	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2429)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2335)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1566)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:297)
	at java.base/java.lang.Thread.run(Unknown Source)
ERROR: Bundle weasis-dicom-viewer2d [7] Error starting file:/app/lib/app/bundle/weasis-dicom-viewer2d-4.1.2.jar (org.osgi.framework.BundleException: Activator start error in bundle weasis-dicom-viewer2d [7].)
java.lang.IllegalStateException: Invalid BundleContext.
	at org.apache.felix.framework.BundleContextImpl.checkValidity(BundleContextImpl.java:491)
	at org.apache.felix.framework.BundleContextImpl.getProperty(BundleContextImpl.java:66)
	at org.weasis.core.api.service.WProperties.getProperty(WProperties.java:50)
	at org.weasis.core.api.service.WProperties.getIntProperty(WProperties.java:96)
	at org.weasis.core.ui.editor.image.MouseActions.<init>(MouseActions.java:42)
	at org.weasis.core.ui.editor.image.ImageViewerEventManager.<init>(ImageViewerEventManager.java:66)
	at org.weasis.dicom.viewer2d.EventManager.<init>(EventManager.java:154)
	at org.weasis.dicom.viewer2d.EventManager.getInstance(EventManager.java:148)
	at org.weasis.dicom.viewer2d.internal.Activator.start(Activator.java:60)
	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:849)
	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2429)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2335)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1566)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:297)
	at java.base/java.lang.Thread.run(Unknown Source)
27.07.2023 08:56:35.539 *SEVERE* [main] org.weasis.launcher.WeasisLauncher: Cannot not start framework.
java.awt.HeadlessException: 
No X11 DISPLAY variable was set,
or no headful library support was found,
but this program performed an operation which requires it,

	at java.desktop/java.awt.Desktop.getDesktop(Unknown Source)
	at org.weasis.launcher.WeasisLauncher.launch(WeasisLauncher.java:253)
	at org.weasis.launcher.AppLauncher.main(AppLauncher.java:42)
27.07.2023 08:56:35.539 *SEVERE* [main] org.weasis.launcher.WeasisLauncher: Weasis cache will be cleaned at next launch.
27.07.2023 08:56:35.539 *SEVERE* [main] org.weasis.launcher.WeasisLauncher: State of the framework:
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.framework-7.0.5 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * com.fasterxml.jackson.core.jackson-databind-2.14.2 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * jogamp-2.4.0 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-send-4.1.2 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.scr-2.2.6 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-viewer3d-4.1.2 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * jogamp-linux-x86-64-2.4.0 RESOLVED
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-viewer2d-4.1.2 RESOLVED
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.gogo.command-1.1.2 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.configadmin-1.9.26 ACTIVE
27.07.2023 08:56:35.540 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * jaxb-osgi-3.0.2 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-base-viewer2d-4.1.2 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-core-img-4.6.1 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * com.fasterxml.jackson.core.jackson-core-2.14.2 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-au-4.1.2 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-opencv-core-linux-x86-64-4.6.1.dcm RESOLVED
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * osgi.promise-8.1.0.202212101352 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-explorer-4.1.2 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * docking-frames-1.1.4 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.gogo.shell-1.1.4 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.bundlerepository-2.0.10 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.metatype-1.2.4 ACTIVE
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-core-4.1.2 RESOLVED
27.07.2023 08:56:35.541 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-imageio-codec-4.1.2 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-isowriter-4.1.2 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.glassfish.jakarta.json-1.1.5 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * com.miglayout.swing-11.0.0 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-sr-4.1.2 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-qr-4.1.2 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-codec-4.1.2 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.gogo.runtime-1.1.6 ACTIVE
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-base-ui-4.1.2 RESOLVED
27.07.2023 08:56:35.542 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.felix.prefs-1.1.0 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-wave-4.1.2 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * weasis-dicom-rt-4.1.2 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.joml-1.10.5 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * com.fasterxml.jackson.core.jackson-annotations-2.14.2 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.apache.sling.commons.log-3.0.2.r5 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * com.miglayout.core-11.0.0 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * slf4j.api-1.7.36 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * net.lingala.zip4j-2.11.4 ACTIVE
27.07.2023 08:56:35.543 *SEVERE* [main] org.weasis.launcher.WeasisLauncher:  * org.osgi.service.component-1.5.1.202212101352 ACTIVE

Additional contextual elements

Affected OS: Fedora 38 Workstation, Fedora Silverblue 38 (GNOME 44.3)
Type of installer: flatpak
Windowing system: wayland

[nroduit]

The application is launched as if there were no desktop installed. However, Wayland is included in the configuration.

This may be related to this problem. We'll see if the next release of Java 21 fixes this.

[ispanos]

I have the same issue on Fedora 38 Workstation. However this is just a one-time use of weasis and I can do what I need using Xorg.

[nroduit]

I tested just after installing Fedora 38 and the result of the different Weasis installers with the default configuration (Wayland) is:

• Flatpak, Weasis doesn't launch. This confirms the bug described above, which seems to exist for all Java applications with a JDK higher than 17.
• Package RPM => = OK
• SNAP => = OK

[nroduit]

As the X11 fallback seems buggy, the workaround with Flatpak is:

• run flatpak run --socket=x11 --nosocket=wayland io.github.nroduit.Weasis

or

• Install Flatseal: flatpak install flathub com.github.tchx84.Flatseal
• Set Wayland to OFF
  

[nroduit]

Add a reference to the issue on the download page.

[AlbertoFabbri93]

I am having this issue on OpenSuse Aeon with flatpak and wayland. The app does not even show the splash screen.

The workaround with Flatseal works though.

[G10h4ck]

• flatpak run --socket=x11 --nosocket=wayland io.github.nroduit.Weasis

had this problem too, this workaround worked for me