Comment by Eric_WVGG

My favorite is… - set desktop icons to align to grid - have say half a dozen icons in the top right of your desktop - plug into an external display - the icons will be sort of in the same place, but not actually aligned. (Moving a single icon will cause it to go to an unpredictable place because everything around it is stepping over the place you’re trying to drop it.)

This has been the behavior for every version of MacOS at least going back to 10.2 Jaguar (2003).