It happened in the meantime quite often to me: I am editing a minor issue and upon saving, I am informed that SO refuses the edit because I should also edit the title. So my time is lost, if I do not find an appropriate replacement. This is the moment where I think: Oh, once again, my time is absorbed by a black hole.
One effect is that there is a lot of creativity to write the word problem: pro blem, probIem, prob|em, problèm.
Suggestion: Alert the editing person at the time when the edit is started. Currently, an edit is meekly permitted, and only upon saving the user is informed to perform this other task.
I have encountered this problem several times in the past, and it is really frustrating, in particular when retagging. Also, what should one do with a title like NP-complete problem in Prolog