Every time a Thai team is about to get attacked you can hear someone in the audience yelling at them. I know the players are wearing earmuffs but unless you're driving or shooting in game you can still hear someone yelling in the room.
It happened basically every time in the group stage, here's two examples:
https://youtu.be/hHDpo32wbqI?t=11585
https://youtu.be/hHDpo32wbqI?t=12209
Obviously the crowd is going to cheer more for the local teams when they succeed, but that's a different thing than yelling warnings before an engagement.