Same thing just happened to me for the second time in a month, both of which (or at least this one) occurred after pasting multiple web pages into Word. The first occurred just about a month or so ago, the second today. The first (~2.10.26) forced me to use Pages, which had just been updated/overhauled. At some point between then and now, everything was fine. Yesterday and today, I pasted multiple pdf''s into Word, one at a time. Some were a page or two, others probably closer to 7-10 pages. All worked without incident. Just went to paste what, according to Word, would have been my 8th document (today, I believe) and - nothing! A tiny clipboard icon appears (just as happened a month ago), but as OP said, irrelevant and fixes nothing. I ended up on this page in the hope someone had figured out the problem. Mine is an Intel 16" MBP (2020, build 2019). Tried everything the first time, including the obvious close app, shut-down, restart. I'm frustrated beyond belief and hope someone may have answers. Thanks.