OM Psychic Noise as an item doesn't work properly in Fortemons

[Gimlaf]

What type of bug are you reporting? OM

What is the bug?
In Fortemons, equipping Psychic Noise as an item makes your moves apply Heal Block to the target for 5 turns, instead of 2. Using Psychic Noise as the move applies the Heal Block for 2 turns as normal.

Replay of Psychic Noise as the item:
https://replay.pokemonshowdown.com/gen9fortemons-2026969239?p2

Replay of Psychic Noise as the move:
https://replay.pokemonshowdown.com/gen9fortemons-2026967662?p2

Are you able to replicate it? If so, how?
Simply have a mon with Psychic Noise as the item and use any attacking move in a Fortemons battle.