First of all, you must have 8-way movement on to get any of the following to work.
Walk diagonally onto a water combo and this happens. This would cause link to get stuck if drowning isn't enabled, which it was in this quest, thank god. I also would like to mention an update to the ladder bug.
If link tries to cross water and drowning is enabled he will drown if he doesn't have the flippers and isn't aligned to the 16x16 grid.
I walked on a pit combo, and a ladder appear. Same rules apply as above. Bug, or no bug.
When the carry over happened the ladder was carried. It shouldn't be since it's technically a sprite right?