Troubles with UI in ubuntu

I have issues with User interface in Shotcut (17.08.01) on Ubuntu. It looks quite different from one I have on Windows. It’s like something wrong with scaling in Ubuntu. E.g. playlist takes up almost half of screen width, and cannot be reduced. Some text and signs feel bigger than they should be, and some look misplaced.
My shotcut is installed via snap. I believe I didn’t have these issues when i used zip file before. However when I tried to use zip file again, it just hanged my entire system for half an hour. Snap works fast with no issues.
Sp is this UI experience common, or am I doing/not doing something wrong?

Search in here about hidpi and an environment variable to override it.

Found solution here: Shotcut theming gone wrong