Fabrizio Ruggeri

Sorry, after rebooting my laptop everything is working fine. As you were guessing probably there was a second instance still running after the upgrade. Thank you for the help.

Do you usually change the title to something like "Solved" here?

Sure. Only one instance of Enpass seems to be running
 

fabrizio  2102     1  0 13:01 ?        00:00:06 /opt/enpass/Enpass -minimize
fabrizio  9973  3880  0 13:22 pts/1    00:00:00 grep --color=auto Enpass

When I try to setup the sync through google drive (which was working fine on version 5) I get the step of authorizing your app. Then the xdg-open opens enpass but a new window and the first window stay always in the state of waiting for authorization process to be complete. I attach a gif to better explain the issue

Great news!

For the moment I used the workaround from Jan. 

Thank you, great job guys!

Fabrizio

I have exactly the same problem.

I'm on Kde-Neon

Qt: 5.7.0
Plasma: 5.7.2
Kernel: 4.4.0-31