I have a very strange behaviour in InDesign CC 2022: I am layouting a magazine and on some pages (after reopening my file) ALL textboxes and photos seem to be scaled to a super small size and are places on eachother on the middle of the page. I have to rebuild the whole page. This happened on different pages multiple times …
never experienced this myself, but I once had the chance to look into such a document from someone who reported this here in the forum. The way to resolve it was this:
Do a duplicate on the document file and work with the duplicate.
 Add an empty spread before the one where you see the issue.
 Go to the damaged spread and use the selection marquee with your Selection tool and select all the tiny elements at the spine. Do not use the menu command Select All.
 Use menu command: Copy
 Go back to your empty spread.
 Use menu command: Paste in Place
If that is working for one damaged spread do this with all other damaged ones as well.
If the issue cannot be resolved this way, export the document to IDML, open the IDML file as document and save to a new name. I cannot guarantee that all elements can be restored, but maybe you have not to rebuild all of that document.
Regards, Uwe Laubender ( Adobe Community Professional )