Problems with sound and Musescore DrumLine

Hi, Gang!!!

I use MuseScore 3.0.2, portable edition, in UbuntuStudio 18.04.1 LTS (64 bit Linux).

As I commented before, MuseScore 3.0.2 still has an issue with the Linux sound driver: I have to click on the "Restart MIDI and Audio Devices", into the "Input/Output" tab of the "Preferences" menu, to get sound from my computers.

And... When I get sound with that "procedure", the cursor grey zone is walking out-of-synchronization with the playback.

The last issue can be fixed moving the mouse while the playback is on.

Also... If we install the MuseScore DrumLine extension... MuseScore 3.0.2 doesn't run anymore.

We have to go to MuseScore 2.3.2, uninstall the extension and, then... MuseScore 3.0.2 runs again!!!

So...

"Houston, we have a problem!"

Blessings and Greetings from Chile!!!

JUAN