slime balls

[Update and kind of fixed: Holding a cherry bomb and running at the slime balls broke them. Since then they've broken normally, so i call that a W. Special thanks to Kent who'd just mailed me that and it was still in my inventory] I'm on a Four Corners farm and there's two slime balls on the...

I don't know if this is some sort of collision effect occurring between enemies and items, but something is causing the items to get bumped around when harvesting them – sometimes completely off screen into the void space around the room. I've tried combining rings with magnetic effects in order...