workspace-switcher TypeError: this.buttons[from] is undefined

Distribution

Fedora 42

Package version

Cinnamon 6.4.9

Graphics hardware in use

Advanced Micro Devices [AMD/ATI] Kaveri [Radeon R7 Graphics]

Frequency

Always

Bug description

got this whenever I issue a "journalctl -b | grep cinnamon" at boot:

aoû 04 07:30:53 cinnamon[3878]: JS ERROR: TypeError: this.buttons[from] is undefined                                  _onWorkspaceChanged@/usr/share/cinnamon/applets/workspace-switcher@cinnamon.org/applet.js:355:9

Steps to reproduce

Happens at every boot, no matter which kernel I'm using.

Expected behavior

Not sure, but this should not be there.

Additional information

System is using Xorg on Fedora workstation (gnome) and cinnamon desktop.

I've changed the function to

    _onWorkspaceChanged(wm, from, to) {
		if (this.buttons[from]) {
			this.buttons[from].activate(false);
		} else {
			global.log("workspace-switcher: this.buttons[from] is undefined, from =", from, "buttons =", this.buttons);
		} 
       this.buttons[to].activate(true);
    }

and will report whether or not it's fixed by tomorrow.

Start with applets/workspace-switcher@cinnamon.org/applet.js at _onWorkspaceChanged, line 355, and inspect how this.buttons is initialized and updated during boot. Reproduce with journalctl -b | grep cinnamon on Fedora 42 using Cinnamon 6.4.9. Done means the workspace-switcher no longer logs this TypeError at boot.