Created attachment 121620 [details]
Document can unzoom infinitely since it was looking as small dot. Unzoom level must be acceptable for screen size. Related screenshot is attached.
I had tested it with an one page word document on version 220.127.116.11.alpha0+ build 13d4bda supplied by Aybuke.
*** Bug 89919 has been marked as a duplicate of this bug. ***
I think the newer bug should be marked as a duplicate of the older bug, not the other way around.
*** This bug has been marked as a duplicate of bug 89919 ***