Issues with "wait for moderator" room

Deear Denis, dear Maxim, dear Alvaro, dear ... oh there are so many

i checked, if this is reproducible. I've made a note of every single step:

1) login user 1 (moderator)
2) user 1 entering private room
3) user 1 turns camera and mic on
4) login user 2 (not a moderator)
5) user 2 is entering private room
6) user 2 requests permissions to use camera and mic
7) user 1 grants permissions to use camera and mic via activities and
actions
8) user 2 turns on camera and mic
user 1 and user 2 see/hear each other
9) user 1 leaves the room
user 2 sees "wait for moderator..." message
10) user 1 re-enters the room
wait for moderator dissapears
user 1/user 2 cameras/mics off
11) user 1 turns cam/mic back on
=> user 2 sees user 1
12) user 2 turns cam/mic back on
=> user 1 does not see user 2 (question mark face ...)
=> several mic symbols displayed on user 2 - browser for user 2.....

see attached pic ....

user1

chrome 84.0.04147.135 (Official Build) 64 Bit gentoo linux machine

user 2

Firefox 79 (64 Bit)
Windows 10

user 1 and user 2 both on the same network different machines

server

ubuntu 18.04 LTS

openmeetings ...

Version
5.0.0
Revision
422e22f
Build date
2020-08-18T00:21:52Z

Many thanks again,

kaffeesurrogat

Initial report and discussion: https://markmail.org/message/kei3r5gh2fwutitu