Selected list item mis-positioning

Another weird one ... today is starting to feel like a lost Twilight Zone episode.

Create a longish list, then use the properties panel to flag a selected item:



In this case, it's the second item on the list, and you'll notice the selection highlighting slightly undershoots the target. That's trivial ... but this isn't:



Here the intended target was item 16, "Depth with handle," but we've now overshot to where the highlighting straddles the next item. If you try selecting each item one-by-one down the list, you can watch the highlight alignment creep ever-so-slightly each time, starting a little shy of the intended target and then completely overtaking it.