Background
When launching the LucidLink Client app on Unity or GNOME desktop environments the app UI fails to load correctly. The user is presented with nothing when they click the app in the OS UI nor when they launch the app from CLI.
Solution
Edit the .desktop launcher to prevent the app UI launching in a sandboxed mode. Full functionality of the app is maintained.
Ubuntu + Unity / Ubuntu + Gnome / CentOS 7 GNOME
sudo vi /usr/share/applications/lucid.desktop
Modify the Exec line to the same as below (ensuring %U is preserved)
Exec=/opt/lucidapp/LucidApp --no-sandbox %U
Save the file and exit
:wq!