Make an issue of/out of something - Idioms by The Free Dictionary
make an issue of/out of something
make an issue (out) of (something)
To exaggerate or treat a minor issue in a way that makes it seem like a major one. You got one B and you're acting like you're failing the class—don't make an issue out of nothing. Let's not make an issue of this; it's just a minor setback.
make an issue of treat too seriously or as a problem.
make an ˈissue of/out of something behave as if something is more serious or important than it really is: Look, it’s not important who did it. Let’s not make an issue out of it.