It may be connected to Desktop mode I'm using.
I've searched the forum and github issues - nothing (also for keepassdx), so will appreciate help finding explanation/solution. Is it AOSP, GOS or keepassdx?
I piloting use KeepassDX for passwords. I've enabled unlocking kpdx database with boometry ("device unlocking").
I often use browser in Desktop mode. Periodically, after a while, an attempt to unlock password db leads to en error without any visible crash/error - biometric unlock option just stops being displayed on kpdx db selection screen.
It stops working for all apps - biometric confirmation disappears, no usual pop-up is shown.
At the same time it continues to work for device unlock itself, so it doesn't look like hardware malfunction.
I can't recall I saw it while not in desktop mode, but it may be as I'm not using kpdx that intensively while not in DM.
It's only reboot that brings things to normal.
Has anyone experienced the same? Any non-reboot workarounds?