godot --editor --quit hangs when project has fonts and cache is clean

[Houkime]

Godot version

3.4.4.stable

System information

Arch Linux (as of issue opening date)

Issue description

When: (godot cache is clean OR the project has never been opened before) AND project contains a font file
Occurs: godot -e -q hangs
Instead of: godot exits cleanly

Steps to reproduce

• Go to the attached project folder
• Clean cache (rm rf ~/.cache/godot)
• godot -e -q

Minimal reproduction project

reprohang.zip

Context

This happens when a person has newly cloned the git repo and does godot -e -q to import assets.

Output

Godot Engine v3.4.4.stable.arch_linux - https://godotengine.org
WARNING: XOpenIM failed
     at: initialize (platform/x11/os_x11.cpp:197)
Found discrete GPU, setting DRI_PRIME=1 to use it.
Note: Set DRI_PRIME=0 in the environment to disable Godot from using the discrete GPU.
WARNING: XCreateIC couldn't create xic
     at: initialize (platform/x11/os_x11.cpp:494)
OpenGL ES 2.0 Renderer: AMD Radeon HD 8600 / 8700M (oland, LLVM 14.0.6, DRM 3.46, 5.18.9-arch1-1)
OpenGL ES Batching: ON

WARNING: Scan thread aborted...
     at: _notification (editor/editor_file_system.cpp:1087)

NOTE: this is Wayland+XWayland, and all these warnings occur with clean exits too.

[qarmin]

Freeze here

#0  0x00007ffff7b46868 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fffffffd160, rem=0x7fffffffd170) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007ffff7b4b6e7 in __GI___nanosleep (req=<optimized out>, rem=<optimized out>) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x0000000002b6175a in OS_Unix::delay_usec (this=0x7fffffffd5b0, p_usec=10000) at drivers/unix/os_unix.cpp:243
#3  0x0000000002f19263 in EditorResourcePreview::stop (this=0x87de220) at editor/editor_resource_preview.cpp:441
#4  0x0000000002f194ae in EditorResourcePreview::~EditorResourcePreview (this=0x87de220, __in_chrg=<optimized out>) at editor/editor_resource_preview.cpp:454
#5  0x0000000001a87160 in memdelete<Node> (p_class=0x87de220) at ./core/os/memory.h:114
#6  0x00000000039dc389 in Node::_notification (this=0x97906e0, p_notification=1) at scene/main/node.cpp:171
#7  0x000000000191e3fa in Node::_notificationv (this=0x97906e0, p_notification=1, p_reversed=true) at ./scene/main/node.h:47
#8  0x0000000002e63be7 in EditorNode::_notificationv (this=0x97906e0, p_notification=1, p_reversed=true) at editor/editor_node.h:91
#9  0x0000000004ae0beb in Object::notification (this=0x97906e0, p_notification=1, p_reversed=true) at core/object.cpp:927
#10 0x0000000004addcb7 in Object::_predelete (this=0x97906e0) at core/object.cpp:387
#11 0x0000000004aeaeb3 in predelete_handler (p_object=0x97906e0) at core/object.cpp:2001
#12 0x0000000001a87140 in memdelete<Node> (p_class=0x97906e0) at ./core/os/memory.h:110
#13 0x00000000039dc389 in Node::_notification (this=0x90debc0, p_notification=1) at scene/main/node.cpp:171
#14 0x000000000191e3fa in Node::_notificationv (this=0x90debc0, p_notification=1, p_reversed=true) at ./scene/main/node.h:47
#15 0x0000000003a60c65 in Viewport::_notificationv (this=0x90debc0, p_notification=1, p_reversed=true) at scene/main/viewport.h:91
#16 0x0000000004ae0beb in Object::notification (this=0x90debc0, p_notification=1, p_reversed=true) at core/object.cpp:927
#17 0x0000000004addcb7 in Object::_predelete (this=0x90debc0) at core/object.cpp:387
#18 0x0000000004aeaeb3 in predelete_handler (p_object=0x90debc0) at core/object.cpp:2001
#19 0x0000000003a2d444 in memdelete<Viewport> (p_class=0x90debc0) at ./core/os/memory.h:110
#20 0x0000000003a1a13e in SceneTree::finish (this=0x8fc9f40) at scene/main/scene_tree.cpp:739
#21 0x000000000187919b in OS_X11::run (this=0x7fffffffd5b0) at platform/x11/os_x11.cpp:3940
#22 0x0000000001863b0b in main (argc=3, argv=0x7fffffffded8) at platform/x11/godot_x11.cpp:55

[Calinou]

I'd say editor resource preview generation should probably not happen when --quit is used.

[MikeSchulze]

i can confirm this bug, i try since days to workaround this bug.
I build a CI workflow and load submodule and needs to reload the project.

To solve my problem i build a simple script to enforce the editor to reload and quit.
addons/gdUnit3/scan_project.gd

run this line on mac or windows works fine
godot -e --path . -s res://addons/gdUnit3/scan_project.gd --no-window

but when execution on GitHub action it hangs
this bug forced me to use a timeout and ignore the error
https://github.com/MikeSchulze/gdUnit3/blob/master/.github/workflows/ci-pr.yml

- name: "Update Project"
        if: ${{ !cancelled() }}
        timeout-minutes: 1
        continue-on-error: true # we still ignore the timeout, the script is not quit and we run into a timeout
        run: |
          ${{ env.GODOT_BIN }} -e --path . -s res://addons/gdUnit3/scan_project.gd --no-window

Is there a better way to update the project file?

[MikeSchulze]

@Houkime i found a workaround to fix

func fix_cache_bug():
	for node in root.get_children():
		if node.name.begins_with("EditorNode"):
			for child in node.get_children():
				if child is EditorResourcePreview:
					var prewview := child as EditorResourcePreview
					prewview.check_for_invalidation("res://")
	yield(root.get_tree(), "idle_frame")