Sketchup for IPad: Copied and moved geometry disappears on tool change

Hi folks, last year when I started using SKP for iPad, I was really excited about it, the UI felt very natural and intuitive. Later in the year I encountered some buggy behavior, like snapping to a location inches away from the Apple Pencil tip. It was kind of unusable and I went back to desktop. Just picked it up again this morning as I was doing some site modeling work. A new issue has cropped up: I copied and moved some simple geometry, but it just disappears when I change tools. Pretty disappointing. Anyone have a solution to make SKP for iPad actually useful?