Pokémon Scarlet and Pokémon Violet are now available for Nintendo Switch. Read on below to learn more:

Regarding a Bug Affecting Dragon Cheer

We have received reports that the move Dragon Cheer is not working as intended.

Known Bug

When a Pokémon under the effect of Dragon Cheer is switched out of battle and then reenters that battle, its attacks will still have a heightened chance of landing critical hits.
The intended behavior is for Dragon Cheer’s effect to be removed from a Pokémon once it is switched out of battle.

How We Will Address This Issue

We plan to fix this issue in version 3.0.1, which will be released in mid-January 2024 or later.

How We Will Proceed Until This Issue Is Resolved

Dragon Cheer will be usable with its current effects in Ranked Battles and official competitions* until this bug is fixed in the version 3.0.1 update.
* “Official competitions” in this specific circumstance refers to Battle Stadium tournaments like Blueberry Prologue and Ranked Battles.

Source: Pokémon Scarlet and Violet news