Hi,
I played the early alpha version (2494) and encountered a bug where ladders can’t be removed enterily.
Steps to reproduce:
Start a game
Build ladders halfway in a cliff
After the ladders have been constructed, extend the ladders by building second ladders on top of it
Click one of the remove buttons (yes now there is 2). Now a villager removes only the most top ladders.
Try to click the second remove button (there are still 2 even accepting the fact that other ladder was removed) -->nothing happens.
After this you can build the top ladders again and a third remove button appears. Now you can remove it again and build a another one. I tried to repeat this 4 times and here is the outcome: