Paper2d sprite not flipping in 3D world

I’m trying to do a 2.5D game, and the playable characters are going to be in 2D. I have the following BP for my character movement, but when the InputAxis MoveRight’s Axis value is plugged into the comparefloat, my character can only move right and not turn left. Without that plug, my character doesn’t flip to the left either. What’s going on?

Note to future self - tick the allow rotation/yaw thingy on the sprite blueprint.