"This app is broken on Mint 19.2. Sometimes it may quit by itself without any notification. During the screen share by other people in a group call, freezings occur, so you can not interact with this application. The only way to exit the app is to kill it through "System Monitor" and rejoin to voice chat/group call. The same app freezing problem happens during your own screen sharing in a group call and in voice chat channel ("Go Live" function). Due to these reasons, app is not usable at all."