It’s a good idea, but I don’t know any way to make InDesign do that. Maybe with APID from Rorohiko?

When you say “that is the only way I can get it to display correctly,” what do you mean? What happens if you scale it down?

If it’s a matter of needing to scale the puzzle and the clues differently, I suggest placing the PDF twice, scaling them differently, and then cropping out the parts you don’t need in each frame.

Paula, can you send me a small file with this problem in it? Just email the file to me at david at indesignsecrets dot com. I’m so curious now…

There’s also a script here, but I’m not sure if it will do what you need: https://creativepro.com/topic/replace-fonts-in-all-documents-in-a-book

Oh, that was silly of me. Yes, the hair space is non-breaking by default. I had forgotten that.
So… it sounds like that is what your client wants… yes?

You would probably have to use a combination of a Hair Space (or some other small white space) and the No Break formatting.

This is a huge discussion. We had a 1/2 day about creating Accessible PDF files at The InDesign Conference last November in DC, and we may have even more at our event in Atlanta. There are no “flick this switch and it will all work” answers, unfortunately.

I’m not sure what you mean by disabling the row header… are you using Table > Convert Rows > to Header?