Can't save Extracted page
Working on a MAC (mac OS High Sierra v 10.13.2 updated 12.14.17) in Acrobat Pro DC v2018.009.20050
I think this problem started right after OS update.
Open a PDF document, extract a page, and now want to save that page.
A Save As PDF window opens but it is empty and you can't do anything. If you try it too many times it will lock up acrobat and you have to force quit. Does the same thing if you want to do a save as to an existing file and rename etc. Screenshot attached.