The team names shown inside the game and outside the game differ.  The members composing each team are the same - just the letter designation differs.  Outside the game in the game details box A is A and B is B.   Inside the game team A shows as B and B shows as A.  I only noticed this in two team games - not 3+ team games - but that needs to be checked.

In my last two 2-team games where I saw this bug.  It may have occurred earlier but I didn't notice.

 This is not critical but it is a bug.  But it can create confusion.