Sorry, I made you miss the main point with the update. The observation was that 1) there is a large number of them, 2) there was not one before. Here's what the battle check looks like:

Three of them together, you don't think it may be a little excessive? And why now? It only started happening 3 days ago.
There's a possibility that the opponent selection wasn't showing them to me and I crossed some kind of treshold. Are you trying to say that they always were there?