Navigation Pane not showing search results

First of all, I tried responding to another posters similar problem, but I cannot get my response to post, so I'm trying a fresh thread.

Out of nowhere a few days ago, the Navigation Pane in Word will stop showing search ("Find") results and will show only the number of hits, but not show what they are. Word is set for "incremental find," I have the latest versions of both Word 365 and Windows11, and until this started I have never ever had this problem before and I've been using Word for decades.

Here's what happens: I open the doc, the search function works as it should in the Navigation Pane, then suddenly it doesn't. The Navigation Pane is still open and maybe it'll show how many instances of whatever I'm searching for there are, but it doesn't show the actual text. Then it does other odd things, like showing "No" (instead of "None") if there are no hits to the search term. If I exit the doc and every other doc I have open, then go back into the doc, it'll work again, but then stop again, sometimes after only one search. This has happened on several docs. It's not about a corrupted file.

I need to see search results in the Navigation Pane since I don't have all day to search for each item individually. I have no idea how to fix this, and there's no useful guidance on this forum so far. I cannot use another word processing software since I'm freelancing for a company that uses Word.