Not A Bug Bug Report - Mechanics

[szkonk]

What type of bug are you reporting? Mechanics

What is the bug?
Sticky Hold did not work - Roaring Moon knocked off Boots off my Muk, even though it has Sticky Hold.
Obviously Roaring Moon cannot have Mold Breaker or anything of the sort, so I think this is a bug.

Are you able to replicate it? If so, how?
https://replay.pokemonshowdown.com/gen9ou-2279589758

Turn 23

 

[Hydrametr0nice]

Generation V onward​

If the Pokémon is knocked out by the attack, Sticky Hold does not protect the held item.

 

[DaWoblefet]

Confirming this still occurs in Generation 9. I suspect (but am not certain) this happens because Knock Off removes items after fainting occurs, so Sticky Hold is no longer "active" enough to prevent the item from being removed.