Jumpers broken with 16x8 hero hitbox
Setting the hero's hitbox to 16x8 causes jumpers to stop working completely.
Set the hitbox at runtime like this:
hero:set_size(16, 8) hero:set_origin(8, 5)
Here's an example. I put jumpers all along water areas, like so:
And this is what happens after setting the hitbox to 16x8: