Originally Posted by mrfuji3
Originally Posted by neprostoman
It works exactly the same now in bg3. If your character stays next to the ladder it will block the passage. Experienced it in a fight with Polma and Gut yesterday.
Oh great!

a.) Were you at the top or the bottom of the ladder? I wonder if there's a difference...
b.) Given BG3's instant-ladder-movement, does standing at one end of the ladder block characters from getting on from the other end? I presume not...

Unless changed, I was able to block the bottom of a ladder as I recall. However I believe you could not do it from the top. The unit will climb up(or down if you are blocking the bottom from enemies above) and slide around the blocking unit to an open spot. If a unit can get on the ladder it doesn't seem you can stop them from using it and exiting.