Perfect out of the box
I have Steam setup do default compatibility to experimental
The UI icons do not work from time to time.
Clicking on a planned to depart aircraft does not necessarily mean you can drag it onto the airway. Unfortunately, this means this game, which requires fast action, is really difficult to play or partially unplayable.
Installed and played demo. Mouse clicks did not register correctly, forcing Proton Experimental resolved this issue.
Planes do be running on Linux
Only applies to users running display ratios other than 16:9, as the game only supports that. This issue has also been reported by Windows users.
If running with the game's fullscreen mode on a non 16:9 ratio, the menu gets confused and interactive buttons are in 21:9 (or whatever your ratio is), while the game still displays as 16:9. This makes it complicated to use menus or simply play.
I'd suggest disabling the game's fullscreen mode, and switch the window to fullscreen outside of the game (via your compositor). This fixes the issue.