As brought up by @ryuhouji on Discord, multi battles on an up-to-date copy of the battle_engine_v2 are freezing right after your partner and you send out their Pokémon.
https://streamable.com/xr2nae
However, I noticed that it all works normally if I go back to the commit a42bd3f, @DizzyEggg.
https://streamable.com/5hep7y
I suppose the problem may have been caused by one of the following commits: 9a7963e, f70a9ce or 97d0643, since they're the only commits you submitted after commit a42bd3f.
As brought up by @ryuhouji on Discord, multi battles on an up-to-date copy of the battle_engine_v2 are freezing right after your partner and you send out their Pokémon. https://streamable.com/xr2nae
However, I noticed that it all works normally if I go back to the commit a42bd3f, @DizzyEggg. https://streamable.com/5hep7y
I suppose the problem may have been caused by one of the following commits: 9a7963e, f70a9ce or 97d0643, since they're the only commits you submitted after commit a42bd3f.
For reference, the tests were done using this script: https://pastebin.com/raw/mGQdvCv9