This was originally posted at Tech Support , but figured this could be relevant here even if it might not be a bug per se.
Scrivener fortunately keeps the zoom level when you revisit a PDF you have zoomed, but it does not keep the position of the pdf. It scrolls it all the way sideways to the left. This is especially a problem when trying to keep zoomed PDFs centred.
I first found this when viewing PDFs in the inspector, but later found out it’s the same in the main editor and in copyholders.
Please take a look at this