If you change resolutions while playing Arcane Dimensions while you have a crosshair on ("crosshair 1" in console), then the crosshair will be in the wrong spot. It seems like it stays at the same pixel distance from the top left of the screen as it had in the original resolution. This issue doesn't seem to happen outside of Arcane Dimensions.

Screenshot of the crosshair down and right of where it should be:

QSS 2022-08-11
Arcane Dimensions 1.80 patch 1

This issue doesn't exist in Quakespasm or vkQuake.