Oh, thank you for this. I was trying to get my character to jump, and I just copied the select switch from the Paper2D example that was used for running and idle, without realizing that by doing so I was setting the state to always be forced on idle when not moving. The simple solution was to only change to the jump animation when in air, and do nothing on false so that it reverts back to the idle/run selection. Totally makes sense in hindsight, but I was still confused.