Niantic has updated the official GO Battle League Known Issues support page for Pokémon GO. Read on below to learn more:
GO Battle League Known Issues
Issue description: Sometimes the switch overlay will block Trainers from using their Charged Attack buttons.
Issue status: Resolved in upcoming release (0.231)
Issue description: Sometimes after Trainers finish a battle, they will still see the user interface over the Map View after they exit. They will be unable to interact with the game until they restart their app.
Issue status: Resolved in upcoming release (0.231)
Issue description: When a Pokémon is first swapped in, sometimes their HP may appear to already be damaged, even if they have not taken any damage yet. However, the HP will recover to the correct value once they take damage.
Issue status: Resolved in upcoming release (0.229.1)
Issue description: Sometimes Fast Attacks take longer than expected to land. This is more noticeable in quicker Fast Attacks.
Issue status: A potential resolution will be included in an upcoming release. We are testing this resolution to verify its intended effect.
Sometimes opponent avatars or Pokémon from previous battles appear in the current battle.
Issue description: Avatars or Pokémon from previous battles sometimes do not clear when starting the next battle, leading to them staying on screen.
Issue status: Resolved in upcoming release (0.231)
Issue description: When first starting a battle, Trainers may be able to see the user interface at the top of the screen that notes the opponent’s Pokémon before the starting countdown finishes.
Issue status: Resolved in release (0.227)
Issue description: In some cases, after executing a Charged Move, Trainers may not be able to damage their opponent for a short period of time.
Issue status: Investigating
Issue description: Trainers can see a delay from when they finish their Charged Move minigame to when the Charged move lands. Their opponent may in some cases experience instability as well.
Issue status: Mitigated in release, and continuing to investigate for a long-term solution
Issue description: Fast Attacks sometimes inconsistently land on your opponent’s Pokémon just as your opponent uses a Charged Attack.
Issue status: A potential resolution has been found. We are testing its interactions with other fixes.
Source: Official Pokémon GO support page
Source: Pokemon