If the dispenser is placing both types of ladders it won't retract on the same redstone pulse as when started unless both types has a surplus of ladders to be placed.
Examples:
Placing 2 sturdy and 4 rope without surplus of both types: Ladders will not retract (unless another redstone pulse is given)
Placing 2 sturdy and 4 rope with surplus of both types: Ladders will retract (on same redstone pulse as initiated)
Placing 4 sturdy and 4 rope withouth surplus of both types: Ladders will not retract (unless another redstone pulse is given)
Placing 4 sturdy and 4 rope with surplus of both types: Ladders will retract (on same redstone pulse as initiated)
Edit: Ok so it appears tables are no longer working.
If the dispenser is placing both types of ladders it won't retract on the same redstone pulse as when started unless both types has a surplus of ladders to be placed.
Examples:
Edit: Ok so it appears tables are no longer working.