Hello,
im using ubuntu mate 18.10 x64, installed jitsi from official repo ‘sudo apt install jitsi’
% java -version
openjdk version “11.0.1” 2018-10-16
OpenJDK Runtime Environment (build 11.0.1+13-Ubuntu-2ubuntu1)
OpenJDK 64-Bit Server VM (build 11.0.1+13-Ubuntu-2ubuntu1, mixed mode, sharing)
% jitsi -v
Jitsi 2.10.5550
I deleted openjdk11, so only openjdk8 remained, and looks like case is solved