its easy to see that the Llamas are really trying to follow each other as intended... but when going down a mountain its looks like they trying to find a big peth down the mountain. its like they want a stair of 2x2 blocks size which is a problome. Llamas should be able to use 1 block size stairs with out getting any fall damage. they should also be able to jump 2 blocks down if needed (its not high enough to damage them)
its abit like they scard of fall damage abit too much... and its ruining the caravan.
I tested again and they went down the mountain with no problome. Im not sure what caused that to happand last time... (Im using the same version)
I think it got problomes when the player flying. (the glitch didnt happand when I walked down the mountain)