FFA crash

I played an FFA 4 match on 2026-10-29 at 12:46. After destroying the first enemy, I went to capture a second camp, but suddenly all the camps and buildings were revealed to me. I instantly lost the game. Why? If this is a new rule, where is it stated? (Why isn't it displayed, for example, during the game loading screen?)

It is displayed during loading screen and when you accept the match last time i loaded into one for 4 player anyway.