RP9 - Dynamic panel jumps unexpectedly

I have a file with dynamic panels. When you click on ‘select all’ checkbox (next to title) my panel jumps towards upper/left. When I unpin the panel it works fine, so obviously it thinks there is an object there that forces my panel to recenter. When I delete “selections” - which is another dynamic panel - it works fine. WHY is it jumping? Is it a bug?

Published: https://hoplho.axshare.com
File attached.test.rp (148.1 KB)

I figured out it was a shadow causing it around an elevation (rectangle). To resolve, need to apply shadow to the dynamic panel not an elevation inside of it. Seems like a bug to me.