Bro-mons healing bug?

So I was trying to get items from Bro-Max fight, I use Pixel Elixir for the bro-mons everytime they get defeated
But this time, I healed it and in the battle its hp didn’t regen! I healed it during the “Choose your companion” place (Not mid-fight). I did that for normal fight and it still works normal so I don’t understand this one


It still let me fight with 1 hp but still defeated after the Bro-Max hit one shot :frowning: Probably lost of course