Thanks, Mark, for reply. I was beginning to feel like Robinson Crusoe. My observation does not seem to be a common problem, which is good. It is not as easy to duplicate as I thought. I tried twice but only accomplished several deletions of unwanted words, resulting in two satisfactory, ready to submit, puzzles.
If you think the post might, in any way, be confusing, please advise and I will remove it. My initial question has been answered. If it happens again, I will know what to do. I suspect the reason I haven't seen the incident before is because I never elected to revert to last fill. If I couldn't delete the word, I would start over. But this one time, the puzzle was too sound to scrap, so options were to anagram or acronym the word and hope my clever clues and scintillating theme would carry the day.
Re a patch, no, I am still using V9 because it works remarkably well. I wouldn't want Antony to spend any time at all on what appears to be, essentially, a phantom problem, or no problem at all, apparently.