Mechanics Berserk Gene confusion duration

[kumiko]

What type of bug are you reporting? Mechanics

What is the bug?
https://bulbapedia.bulbagarden.net/wiki/Berserk_Gene

The Berserk Gene is consumed even if the holder is already confused or already has +6 Attack stages when it enters battle (due to Baton Pass). If a confused Pokémon is switched out and replaced by a Pokémon holding a Berserk Gene, the holder will be confused for the remaining duration of the first Pokémon's confusion, rather than for 256 turns.

Are you able to replicate it? If so, how?
https://replay.pokemonshowdown.com/gen2ou-2060368947-ky08pb1j9u5ptmglbskutnxg5v8kot4pw

DaWoblefet edit: see also pret dissassembly: https://github.com/pret/pokecrystal...urns-or-the-previous-pokémons-confusion-count