It's a bug. I don't care for your semantic separation of issue/bug and neither should you. Pointless distinction for the sake of ego protection. It is unwanted behaviour, therefore a bug.
Alright I guess we will just have to agree to disagree. For me, if an action takes slightly longer than it could take but isn't significantly impacting UX then I don't personally think of that as a bug. Maybe I just don't understand the impact this particular issue had
