I have veyon works unstable

[glorg]

I have veyon works unstable, because of what it can happen, what can be done with it? I attached a video showing the problem. Veyon 4.1.2 released on 2018-09-06
os: ubuntu 18.04

[tobydox]

Can you try to set the log level to "debug" in Veyon Configurator and run "veyon-server" programm manually in a terminal on the affected client? May be the server crashes or there's some kind of timeout issue.