OK, Barbie, quick interruption. A tester just found an issue in a patch that's about to go out. But the boss suspects it's been there forever, and so do I. Testers eh? They just test everything!
I've run through the steps. She's right, the thing does happen, but ... is it a problem?
Let's think about that.
Shh, I'm thinking. That's part of the job. You think too.
Ok, I've thought about it, and I'm pretty sure this is just "interesting behaviour", not a fault.
Oh, look, I've found it on the issue tracking system - it was reported six years ago. By me. I think that proves that nobody will mind. Case closed!
Can you email all that to the boss? Yes, I know he's sitting right there. Official answers go in writing.