Just giggled as my last meme mentioned trouble with displays and appropriately, a large chunk of the replies were “well MY displays work just fine!” (And charmingly, many were thoughts of things to check, other distros etc. It’s a very kind community, though that may also be the fediverse.)
To cause problems that is.
If I can reproduce the problem, I might be able to think what might be causing it.
Mine are old and can’t think of a concrete one, ask op, theirs are more recent
I’ve had issues with wildly mismatched display sizes: 13" netbook docked to a 72" monitor.
…while I had “mirror my display” enabled…
Even then, I’ve only seen any issue in a few niche proprietary apps.
And rest assured, my life partner already makes fun of me for enabling “mirror displays” in this setup.
It actually mostly just works though!