I was playing the keen6promo and found that when you grab an edge and pull up, if a blooglet pushes you off while you are climbing up you will be in front of all the tiles.This bug does not work in v1.0 as Keen's hitbox is wrong.
Indeed, this is because they made it so that hanging Keen is in front of all tiles, so he doesn't look odd, but if he is disrupted when pulling himself up he doesn't get to run the 'stop being so in front' code.
Add it to the wiki!
What you really need, not what you think you ought to want.