Steps to reproduce

1. Build a 100+ blocks tall scaffolding tower.
2. Build a platform near the top and stand on it.
3. Switch to survival mode.
4. Jump so that you land >3 blocks down on the scaffolding, and hold the jump or sneak button.
5. While moving up/down the scaffolding, release the jump/sneak button.

Expected result

You take fall damage when you first contact the scaffolding, or you don't take fall damage at all (like when you catch a ladder or vine).

Actual result

You take fall damage after you stop moving.

When falling from any distance and grabbing back onto a scaffolding tower, similar to how some grab onto ladders when falling, fall damage is not applied when i grab onto the scaffolding, or when I climb back up the scaffolding tower, but rather when I stop moving on the scaffolding. I have tested this issue on multiple worlds, multiple heights of falling, and whether I climb up or down and how far I go before stopping. The damage seems roughly equivalent to the overall damage I would take if I were to simply fall that specified distance, however, it appears to wait for me to stop moving on the scaffolding before being applied.