It uses the generic climbing message instead.
Would have either expected it to state falling off a trapdoor, or falling off an oak/birch/spruce/jungle/acacia/dark oak/crimson/warped/iron trapdoor where applicable.
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[media][media]
What exactly is fixed? When I tried it, it showed "ManosSef fell from a high place". How exactly can I reproduce the bug?

[media]
If you fall from the trapdoor in this situation, now it should say you fell from a ladder, as that is what was decided that it should say.