Out of character moments I'm actually fine with. As mentioned, if emotions never won out, if there was never a lapse in judgement, if opinions didn't change over time we'd just be reading about super powers and not characters. We got DC for that.
In contrast, I get much more annoyed at clear plot driven decisions. Things clearly decided to push the story forward no matter how contrary to the characters current tone it may be. Those reeeeeeeeeaally irritate me. Though that makes me avoid writers over characters.