Regarding apps opening on the wrong screen, this is a big problem with linux in general: multi-monitor support is not great.
When I first tried Zorin a few years ago (on a PC, not laptop) I had two landscape monitors and one portrait, and the live environment correctly picked the central screen as primary. After installation, however, it picked the left-most screen, which was the portrait one! What's worse is that after logging in sideways and fixing the screen positions, orientation, and setting the central as primary, that only applied to the logged-in user account - the login screen immediately after booting was still the portrait screen and still sideways, though I did find a way to fix that by copying some user-space config files elsewhere.
I also had the issue with some programs always opening on the left-hand portrait screen, no matter where I closed them or what settings I tried. Conversely, some programs always opened on the primary central monitor even if I last closed them on the left-hand portrait or right-hand landscape monitor.
Probably not multi-monitor related and just gnome being sh*t, as is expected, some programs would remember if I resized them or closed them maximised, some would not. This was particularly frustrating when I closed something maximised on my right-hand 1920x1080 screen but then they re-opened maximised on my central 2560x1440 screen, or on the rotated portrait 1080x1920 screen 
I documented my various greivances with Zorin / gnome in this forum and then continued distro-hopping, eventually settling on Manjaro. I found that all Ubuntu-based distros had the same issues, though the only non-Ubuntu-debian-based one I tried was LMDE which had some of the issues, not all. I'm unsure exactly which issues are Ubuntu, which are debian, which are gnome, and which are Zorin, specifically.