Search only finds first comment instance

Today I added the comment “Cliche” to two phrases in two different scenes. When I search for “Cliche”, only the first scene I added it to is listed. (Just for extra info: Reversing the order of the two scenes doesn’t affect this.)
I’m a beginner with Scrivener, but I don’t think I’m doing anything wrong, as when I search for, say, my protagonist’s name, I do get loads of hits.
Is this a bug or beginner’s ineptitude?