The death message for falling off scaffolding is inconsistent. It seems to trigger only when the jump or sneak key is pressed before falling, and even then, it does not always work. Simply falling off scaffolding while standing still does not display the message. This prevents obtaining the death message for falling off scaffolding when a tamed wolf (or a cat, if excluded from the #minecraft:fall_damage_immune tag) dies. However, it does appear when taking fall damage using the /damage command while inside scaffolding.

How to reproduce:

1. Build a high scaffolding tower
2. Set your spawn point on the scaffolding pillar

3. /gamerule doImmediateRespawn true

4. Fall off the scaffolding without using the jump or sneak keys
5. Repeatedly fall off the scaffolding while holding the jump or sneak key

Expected result

The death message for falling off scaffolding should display every time.

Observed result

Sometimes, it states that you fell from a high place without mentioning the scaffolding.