Hi guys, this has now happened to me 3 or 4 times with different documents 50+ pages, imported idml with pdf files imported throughout the document.
Currently I am on Publisher 1.84 running Mac 10.15.7 but it also occurred with the previous operating system and earlier versions of publisher.
I think it might have something to do with importing PDF's and they become editable (which is an excellent feature but I would love to know if it is possible to also import a pdf as a locked file and not have font issues etc like placing in indesign)
The hanging on save allows you to zoom in and out of the pages, open some dialogue boxes like new document, about, check for updates etc but I have left it for hours and it doesnt resolve.
I have uploaded a video from 2+ months ago, It is happening again and worries me because it's with bigger more complex projects and it doesnt look like it's going away.
The video is small, but it shows you the save out dialogue box and then being able to still do other things.