cinnamon: systray icon show up at coordinates 0,0

[MichelHanzen]

Describe the bug
MinimWatch Applet - Problem with icon

To Reproduce
Steps to reproduce the behavior:
After the installation according to https://minimserver.com/install-linux-mwatch.html, the application behaves correctly but the icon appeared black in the applet panel. The content of the icon (gray/yellow/green depending of the status aof the minimserver) appears in the upper left corner of the desktop.

Expected behavior
Icon content should appear un the applet panel.

Screenshots


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Hardware and mintUpdate
system info.odt
Last update on 18/07/2022 installed

Additional context
Linux Mint 21 Cinnamon

[mtwebster]

This is an issue with the systray applet, and happens with other java programs:
confirmed with JDownloader2: linuxmint/cinnamon#10830 (comment)

[clefebvre]

is it specific to Java apps using gtk.statusicon?

[mtwebster]

Not sure if it's all Java apps (I don't know the library/toolkit situation for Java) but this issue is not specific to Cinnamon and has been around a while:
https://bugzilla.redhat.com/show_bug.cgi?id=1014448
martinpl/tray-icons-reloaded#20

There are numerous other reports of other issues, similar and not.

[clefebvre]

Could be an issue between Java and Gtk by the look of things.. if it's going through socket/plug and using xembed there's nothing we can do at DE/Xapp level.

Java devs might need to use a different tray API. I don't know what's available to them though. If they can tap into GI, then xapp.statusicon should work better.

[mtwebster]

It used to 'sort of' work in 5.2 in Cinnamon (the icon was in the right place, but with the same background, but due to changes in muffin these icons are handled differently now.