Hi,
I have the exact same issue with
Android 10 on a OnePlus 6
Firefox 80.1.2 (Build #2015761283)
Enpass 6.5.0.390
Here is a screencast: https://1drv.ms/v/s!AnZDDAK9zYn_gvt2dNw-4_EhBKLEIQ
Must of the time it flickers up a short time and disappears again. There are some circumstances the overlay is visible as I would expect it but I can't reproduce this behavior because it seems pretty random to me.
Would be great to get a fix for that