Clicking on notifications does not work in Windows Squirrel build

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Steps to reproduce

1. Install the Windows Squirrel build (1.1.5, latest main, or from winget) on Windows 11 24H2 or 23H2.
2. Click on an incoming chat notification.

Expected behaviour

App window is supposed to be shown.

Actual behaviour

Nothing happens

Diagnosis and logs

In the Wix (MSI) build, this issue does not appear. Clicking on notifications works as expected.

Up to this, this sounds like the classic setAppUserModelId thing. But this is accounted for in the code, and I can see no issue with it:
https://github.com/nextcloud/talk-desktop/blob/7b6f252c79eef79151d25a7060a6ebd75689d5b4/src/main.js#L50

Now here comes the weird stuff:
As soon as I change this id to anything (really anything) else, it starts working. The notifications don't show an icon anymore, and title is wrong, but clicking works and the app window opens. Example:

if (isSquirrel) {
	// Squirrel.Windows sets the AppUserModelId in the following way
	app.setAppUserModelId('com.squirrel.NextcloudTalkXYZ.NextcloudTalkXYZ')
} else {

Is anybody able to shed some light on this?