Steps to reproduce
Same issue can be noticed on the [Copy Rule] button for the hovering on changes.
I've seen it happen in other tools too. Like the debugger (see screenshot).
We shouldn't block M2 from riding the trains to release based on this bug. But it would be good to fix at some stage.
Might be better to make it block the parent meta bug (bug 1429247) rather than the M2 bug.
Agreed. Moving to lock parent meta bug.