Intermittent lack of video since 2021-08-17 update

I’m self-hosting jitsi stable behind Apache for a small group of friends.

I check for updates daily, and installed the latest (at roughly 2021-08-17T08:00:00Z). I didn’t make a note of exactly what got upgraded.

Last night (2021-08-17T18:30:00Z to 2021-08-17T21:30:00Z), video mostly wasn’t happening. Participants could connect, and audio worked as normal, but when they turned on their cameras everyone else saw the “connection lost” grey icon at top left and the circled initials in the centre of the screen. (But everyone saw their own video, and audio continued normally.) Screen sharing was similarly not seen by anyone else.

I got a similar effect this morning after a full server restart. But now, some hours later, it seems to be working normally, even from/to a mobile connection.

Has something been tweaked in the bandwidth analysis perhaps?