I am having pretty much the same issue on an M2 Mac running Xcode 14.3.1 with Xcode running native (no more Rosetta option) - but the simulators still use (Rosetta (not sure why)) swipeLeft() is not swiping left enough.

Tried it on Xcode 14.3.1 and an M2, still have failures on my tests that use swipeLeft()

Also, I am not using an iCloud folder

For me, a "work around" (ugly hack) is, after I have moved the files and they break the previews, rename them, then rename them back to what they were... For example... I renamed DetailFlipView to DetailFlipView1, the preview started working, so I renamed it back to DetailFlipView, and all works fine. It seems to me that the files are not being handled properly for the preview data. Hope this helps anyone having issues!