Was really enjoying this--until I got stuck. But that aside, it's a cool premise!
Viewing post in Rise of the Round Wrecker comments
Several other bugs--the platforms in general get a little confused if you touch them (as seen above, where it can't figure out it needs to reverse).
At size 3, I somehow came down from the upper level (with the cannon and three platforms) without the camera zooming back in. When I moved left, I just went off the screen. (going back up and then down again seemed to fix that.)
But obviously I kept playing if I found those things, so there was still a lot to like here!