Doesn't seem like this ought to be possible, but it is. Eventually you land on a tiny piece of the invisible platform that the signs are on, and can just grapple through the signs easily.
#[0.9.0.17] Leapfrogging over grappleables
midnight garnet
another setup to do the same thing:
seems like when you overlap the sign it doesnt count as solid to you anymore, and you can grapple through.
and this confirms that using conveyors
final star
Only upward facing?
final star
Ye I figured, I had the same issue before already haha
Again just collider size balancing