What’s that background…And yes, if you open atleast 2 tabs at one time then there’s a chance to meet this fight
Don’t try to fight it though, your bro-mon will lose hp but you get nothing
whats wrong with the background though?
That’s happened to me before once I had to fight a bromon twice to unlock it
That background is just not an official background I think, I guess it’s a bug
Maybe it’s the layout, two bro-mons are in two different sides divided by a green line