Currently Weather Ball's narration as Breakneck Blitz is wrong. Should say for example when Rain is up: "Max Strike Turned into Max Geyser!" or something like that instead.
Storm Drain in game does NOT block Snipe Shot, source - bulbapedia. And I know Snipe Shot goes through Follow Me in-game from experience, and the description of it doesn't mention that or Storm Drain on PS. Not sure about how P-tail vs Storm Drain works but worth testing that too.
G-Max Pikachu cannot get Volt Tackle in game according to Metabou.
Heal Pulse and Pollen Puff are supposed to heal 25% not 50% while dynamaxed but glitched on Showdown.
Not sure if Ally Switch + Stalwart is still glitched but it needs to hit the original target.
Dragon Darts might be glitched on PS, it either hits togekiss or checks for immunity then hits its ally twice on PS even if Kiss follow me's. I know for sure darts is glitched vs Indeedee Pikachu since it hits Indeedee and Pika each one time through follow me when it doesn't do that in-game (would hit Indeedee twice). The glitch seems to ignore Follow Me in the programming.
Yawn also is glitched, Bulbapedia says "It will also fail when used on a target under the effect of
Safeguard, but a Pokémon that is already drowsy can still fall asleep while under the effect of Safeguard."
Unfortunately I didn't save replays of these, maybe can get them if it absolutely needed.