Oh sh*t I'm just remembering now a problem some people had with lock files. I thought it was fixed [0].

In that thread someone said deleting .config/com.ubuntu.telegram/<number>/auth.lock solved the problem with Telegram not starting [1].

So look for .lock file/s and delete it/them.

I still love Debian way more than Ubuntu, but I think they're doing a great work with Touch.

[0] https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-...

[1] https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-...