How does the auto-lock timer work?

so i have set both my desktop app and the browser extension to lock themselves on “system lock”.

yet, the browser extension locks itself every time i close the browser. by ‘system lock’ i understand windows lock, yes?

the desktop app takes a little longer but randomly locks itself up when it wants to. managed a workaround to keep it unlocked longer by ‘closing to tray icon’.

so what i am missing? given the lack of support of windows hello one would hope this works as intended.