I am just at the beginning of the game and using Windows 11 PC. The bug is a scaling issue: Clickable objects aren't scaled to the custom backgound resolution but stay at 1920x1080.
That means, if you have a bright monitor and use a wide resolution like 2560x1080 or 3440x1440 (maybe it applies for the smaller ones too, I dont' know), interactive objects wouldn't 'fit' in the background.
Maybe, you can find a solution for that...