I use Kdenlive with dual monitors. One containing just the project monitor and the rest of the application is on the other screen. This was working fine with my previous version (18.12). I had crash issues on my system relating to previous versions of 19.x so stayed with my tried and tested version.

Today I downloaded the Appimage release of 19.08.3 and I just can't get my display layout to work. I drag the project window into my 2nd display and usually, I simply double click to fill the screen. Now it goes into full screen but reverts back to screen 1 (covering the rest of Kdenlive).

Am I overlooking something here?

Version 19.08.3 (APPImage)
OS: Kubuntu 18.04 (LTS)