I think it’s possible to toggle the thumbnails through GUI scripting. However, if you have only one PDF with this problem, it would be more efficient (for both of us) to run the Quick Action on all the others and do a screenshot of the troublesome one “by hand.”
If you have many PDFs that display this problem, I can look into a solution this weekend. In that case, an example PDF would be helpful.
As for getting your vote, I appreciate the sentiment, but Canadian votes don’t count down here.