known bug with neutralizing gas, for some reason the abilities activate twice in a row when the pokemon with ngas leaves the field.So I was playing Random Battles and my opponent's Zamazenta gets its Dauntless Shield boost twice in a turn but only after KOing my Weezing
https://replay.pokemonshowdown.com/gen8randombattle-1028190668
Happens on turn 8 and 9.
hopefully hoeenhero is in the process of fixing it.