There's no way to add/edit background/watermark without activating the whole "edit pdf" function, which processes the document, taking time and often introducing unexpected changes to the content in order to make it "editable". Previously the background/watermark function did just that. If I'm working with a background/watermark it's probably because I want to leave the original content unchanged. This also leads to longer save times. I can no longer reliably use this feature.