Mattermost.app not working on MacOS 26.5.2

Summary
App starts but opens no window. When I close it, a crash-report is generated.

Steps to reproduce
Download and start Mattermost.app version 6.2.2 (280036905721)

Expected behavior
I would expect some window to open. But this does not happen, even if I try to open something in the menu.

Observed behavior
When I close the app, this crash report is generated:

Application: Mattermost 6.2.2-rc.1
Platform: Darwin 25.5.0 arm64
TypeError: Cannot read properties of undefined (reading ‘isDestroyed’)
at x.isDestroyed (/Applications/Mattermost.app/Contents/Resources/app.asar/index.js:2:340321)
at x.loadRetry (/Applications/Mattermost.app/Contents/Resources/app.asar/index.js:2:341394)
at /Applications/Mattermost.app/Contents/Resources/app.asar/index.js:2:337896

Update:

I just rebooted the Mac. Now Mattermost starts as expected.