Workspaces disappear

[epsilontheta]

Describe the bug
Workspaces suddenly disappear.
I can still see the applications running using alt-tab, but the workspace where they were on just disappear.
Also the "create new workspace" function is now missing (the + (plus) symbol at the end of the list).

Expected behavior
The workspaces should only disappear once no application is present on it.
Also it should always be possible to create new workspaces when needed.

Screenshots

To Reproduce

• Occurs on:
  • X.Org
  • Wayland
• GNOME Shell version: 43.3
• Distro: Fedora 37
• Steps to reproduce, if applicable:

1. Put PC in standby
2. Wake up
3. Switch between applications
4. Bug

Current commit
Output from git rev-parse --short HEAD: becc8b3

Log data
Output from journalctl --boot --reverse /usr/bin/gnome-shell:

Apr 01 20:49:40 hyperion gnome-shell[540790]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed
Apr 01 20:49:40 hyperion gnome-shell[540790]: Object .WorkspaceButtonIcon (0x5640ba9b7d00), has been already disposed — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Apr 01 20:49:40 hyperion gnome-shell[540790]: #3   7ffeff80dbc0 b   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:10379 (9689b0746f0 @ 38)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #2   7ffeff80d480 b   resource:///org/gnome/gjs/modules/core/_signals.js:114 (1ffb7a0740 @ 433)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #1   5640b5e8e018 i   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:4344 (9689b0677e0 @ 12)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #0   7ffeff80ca20 b   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:4417 (9689b0679c0 @ 653)
Apr 01 20:49:40 hyperion gnome-shell[540790]: == Stack trace for context 0x5640acce1490 ==
Apr 01 20:49:40 hyperion gnome-shell[540790]: #3   7ffeff80dbc0 b   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:10379 (9689b0746f0 @ 38)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #2   7ffeff80d480 b   resource:///org/gnome/gjs/modules/core/_signals.js:114 (1ffb7a0740 @ 433)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #1   5640b5e8e018 i   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:4344 (9689b0677e0 @ 12)
Apr 01 20:49:40 hyperion gnome-shell[540790]: #0   7ffeff80ca20 b   /home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:4417 (9689b0679c0 @ 653)
Apr 01 20:49:40 hyperion gnome-shell[540790]: == Stack trace for context 0x5640acce1490 ==
Apr 01 20:49:40 hyperion gnome-shell[540790]: Object .WorkspaceButtonIcon (0x5640b0235a90), has been already disposed — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.

...

Apr 01 20:45:38 hyperion gnome-shell[540790]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed
Apr 01 20:43:58 hyperion gnome-shell[540790]: Can't update stage views actor <unnamed>[<Gjs_material-shell_papyelgringo_extension_MsApplicationButtonContainer>:0x5640b8cb5230] is on because it needs an allocation.
Apr 01 20:43:58 hyperion gnome-shell[540790]: Can't update stage views actor <unnamed>[<MsApplicationLauncher>:0x5640ae880630] is on because it needs an allocation.
Apr 01 20:43:58 hyperion gnome-shell[540790]: Can't update stage views actor <unnamed>[<ClutterActor>:0x5640ae7ef080] is on because it needs an allocation.
Apr 01 20:43:57 hyperion gnome-shell[540790]: JS ERROR: TypeError: this.primaryMsWorkspaces[(currentIndex + 1)] is undefined
                                              activateNextMsWorkspace@/home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:11143:13
                                              HotKeysModule/<@/home/fb/.local/share/gnome-shell/extensions/material-shell@papyelgringo/extension.js:8547:37

[epsilontheta]

The only other plugins I have currently activated are AppIndicator and KStatusNotifierItem Support and User Themes.
I have two monitors.

[epsilontheta]

After disabling User Themes Plugin the windows and the "add workspace" function appeared again. Seems like that somehow magically fixed it.. At least somehow. The windows are now all at the first workspace. Before they were on different ones.