Kalista Passive Bug

When Kalista auto-attacks an enemy inhibitor or nexus then uses her passive dash, it causes her to automatically start moving towards the blue fountain. My best guess about what's happening is that when she uses the passive dash and the game tries to set her target back to what she last attacked, it can't set her target to an inhibitor or nexus, so it makes her move to what I assume are the coordinates (0, 0). I hope my wording there wasn't terribly confusing. This isn't an awful, game-breaking bug, but I figured I'd still report it.

Also, my brother actually found this on PBE, and all our testing was done there, but I'm too lazy to log out of my live account and into my PBE account just to post this on the PBE boards when I see no reason it wouldn't also apply on live.