Blue Iris

Here is my situation.
I have two installations of BI, both are the latest version 5.3.3.16 x64
When I access BI using Firefox 82.0.3 the live view is fine.
When I try and playback any of the clips, the clips play but the "handle" for seeking through the video doesn't move and the time code for the play position is NaN:NaN:NaN:NaN/5:20 (for instance).
IF I grab the seek handle bar and scroll through the video, the NaN's display the time, but as soon as I release the "handle" NaN reappears.
This used to work great a few versions ago (I really didn't notice until updating .15 to .16, but I think it was there before this version).
Anyone else notice this? And what could be causing this?

Thanks!

Just created an account to say I am experiencing the same. I also am using 5.3.3.16 and firefox

I am having the same issue with firefox showing nan on the timeline, have tried on multiple computers using firefox. It does still work in chromium.

Reporting back that the issue has been fixed for me. I think it was after this most recent BI update.

Updating to the most recent also fixed this playback issue for me.