Video Background and Chat disappeared

After upgrading to the latest version of jitsi and prodody, the chat silder is empty and the possibility to change the Video Background disappeared.
OS: Ubuntu 18.04

# dpkg -l | grep "jitsi\|prosody"
ii  jitsi-meet                             2.0.6689-1
ii  jitsi-meet-prosody                     1.0.5638-1
ii  jitsi-meet-turnserver                  1.0.5638-1
ii  jitsi-meet-web                         1.0.5638-1
ii  jitsi-meet-web-config                  1.0.5638-1
ii  jitsi-videobridge2                     2.1-592-g1e2879e0-1
ii  prosody                                0.11.10-1~bionic1

Testsed with different Browsers (Latest FF, Latest Chrome) on Linux and Windows.
Known issue? something new in config?

Thank you very much!

Did you customize toobar buttons?

This would be done in /usr/share/jitsi-meet/interface_config.js right?
… I have to dig deeper, i made a different file from the js above

This file is considered deprecated now. Most changes can be found under /etc/jitsi/meet/

OK, thank you very much! I have to check the differences or individual changes

I got it! There was in fact a individual changed css file from /usr/share/jitsi-meet/css/all.css
After copy the latest all.css to the custom.css all went well.
Further is on the nginx Proxy a rewrite set, to keep the individual css apart from the upstream css

Can be nice, but need maintenance after update.

Cheers for your fast reply guys!