When I was making my game for the Competition recently. I had an object that would disappear and then reappear after 4 seconds. When I made my object disappear, I would set an action to be isVisible = false. The thing is though, when I did this, the Solid behavior still existed!
This makes sense to me, but I would appreciate an option/action to set the Solid behavior by isSolid or something.
My little small (and bad) work around was to set the position of the object I wanted to disappear to an X value of -9999. And then set it back to the original X position afterward I wanted it to reappear.