Aspect ratio correction not applied in fullscreen

This problem is simple to reproduce in both Turbo and Hyper Nyma/

PCEHawk works as expected to compare.

Set display to maintain aspect ratio, and set to use system's recommendation

lastly set Expand pixels by integers only (e.g. no 1.3333x)

now load a game go full screen. Image aspect ratio very broken.

[YoshiRulz]

I think this is expected behaviour?

I think this is expected behaviour?

Possibly. I ended up trying 2.91 release and its the same.

maybe its not a bug maybe has to do with how bizhawk uses this core?

That being said it looks broken, sorry if it is as intended.

[Morilli]

I just tested this and can verify

1. it does look broken
2. it's most likely working as intended

which makes me wonder what the intended use case for the "expand by integers only" option is, at least in combination with non-1x1 scaling. Would it be sensible to disallow this option when using custom AR or disallow custom AR when having this option enabled? The current result is sketchy at best.