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Turn 24, Raikou faints because of recoil damage from Life Orb, Swampert uses Hydro Pump but it fails because of not having a target. Yet in tooltips, Hydro Pump's PP is reduced by 2 instead of 1 because of Raikou's Pressure despite Pressure actually not applying to it on that turn...
Facade ignores the physical damage halved from burns itself, it doesn't matter if the Pokemon has Guts or not.
The ability returns to the regular one when the Pokemon which had its ability swapped with Wandering Spirit switches out, the bug might be it still showing Wandering Spirit in tooltips.
White Herb restores all lowered stat changes to 0 when one of them is less than 0.
From your replay, Intimidate never lowered Hawlucha's Atk stat enough for it to fall below stage 0 and therefore White Herb didn't activate.
G-Max Steelsurge does 12.5% damage to both Mimikyu and Eiscue (Disguise/Ice Face) despite them being weak to Steel type, it however does 25% damage to their busted formes.
https://replay.pokemonshowdown.com/gen8ou-1024919503
More testing with Stealth Rock in Camomons (Mimikyu being Fire type...