Bug Can anyone explain this?

So, the Y axis on some of my objects are going reeeally weird in the new build of Unity. Basically, its increasing at a heck of a pace.... outside of playmode. So none of my code is running right now. This is just a normal object. I reference it once. The only thing I've done is delete it then undo that. This also happens in playmode. It's preventing the contents of the box from being anywhere near it. Seems to be because it has a scroll rect as when I disable that, it stops. But I don't think there's anything odd about the rect.

https://www.dropbox.com/s/htbmxj44y9soqug/2023-03-06 11-15-40.mkv?dl=0

 

Hmm. Seems to have stopped when I restarted it?