Cup. Opponent about 10% weaker. Away game fan bonus + 3% for home team (my opponent). I am white, I have still 64% posession in this game and won it easily 3-0. On a neutral ground without any fan bonus I would have had 67% posession.

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Cup rematch, this time I'm home (yellow). Fan bonus + 15% for me. Still only 48% posession. On a neutral ground I as the home team would have had 33% posession and the opponent 67% as away team, same I had in the away game. Lost 1-3.

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I mean, sure tactics can change but apart from that nothing really happened to both teams between these 2 matches. Still we have a posession of 67% in favor of the away team in both matches, when in a normal world and in TE until a few weeks ago, the home team always had a little bonus.
Say what you want, but this is just impossible. There must be a bug regarding this. I barely can get over 50% posession in any of my home games, despite having the fan bonus +15% and being the better team on paper, yet I'm absolutely dominating in my away games.