I'm on windows 11.
Since updating to 19.4 i noticed that everytime i duplicate a page it moves my whole layout around. It happens not only if i alt drag the page, also if i right click duplicate and when i made an alternate layout in the page panel. It also doesn't matter if i lock a layer. Everything gets moved a little bit to the right or the left, to the top or bottom. Sometimes it also slightly scales an image i believe. The only thing i can do against it, is copy the whole spread and paste it on a new blank page, but that's really annoying, especially since it doesn't copy it to the different layers it was on.

The first screenshot is an example of how it's supposed to look and the second how it ends up looking if i duplicate it.