Just as a note, I attempted to put blank unicode spaces unsuccessfully about 7 times before this happened (because of the dumb rule where Roblox does not allow for same group names, claimed by 0 follower groups for years). Could I be shadowbanned from creating groups because of that?
I solved the problem! Thanks for the help and consideration, 9to5z.
For anyone else running into the same problem, the problem is not actually the title, but the description. The limit says 1000 characters, but anything above 980 causes the issue for some reason. Just keep your description characters below 980.