It looks like there's a new message shown when Community bumps inactive questions:
Bumped to the homepage by Community 10 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
But on Japanese.SE, this message is showing up on a question that's only 21 hours old, after a suggested edit was approved by a moderator, which doesn't seem like the right behavior to me.
I imagine this message was intended to be shown whenever a question is bumped to the top of the front page after being inactive for some time. That didn't happen here, so the message appearing on this question seems like unintended behavior.
Screen shots showing the current state of the question: