Font for instrument names changed unexpectedly

Hi, I just had something strange happen, I don't know how, and can't find any references in the forum that help.

I have a score with eight instruments. I named them generically (synth 1, etc.) when I started, then went back in and renamed them with the names of the synth patches I'm using. It worked fine for the first few instruments, then on the 4th instrument the new name came in with a tiny font, and on the 6th, it came in with a light gray font. There were not problems with instruments 1,2,3,5,7 and 8. I can't find a way to change them back.

If anyone has any ideas on how to fix this, I'd appreciate it.

And, thanks to everyone who's contributed in one way or another for this fabulous tool! I wouldn't be composing if I hadn't discovered it.