Alien abduction? The Bermuda triangle?

I just lost a match. It happens. But the circumstances leave me a bit peeved. Check the screenshots.
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You will see that I had a DC player (Govas) sent off. It happened whilst I was making a substitution, I was replacing an ST with an AMC. I had been playing 5 across the defence so reorganised them in to an evenly spaced 4. I then went a goal down, losing 1-2. I wasn't worried, I could get it back. I pushed my wing backs up, leaving 2 DCs.

But suddenly, the possession went wildly to the other team. Why? One of my DCs disappeared. M. Ben Yaacoub. He just vanished. Not injured, subbed or carded, just gone. Of course I went down to another goal, I had 9 players, and I lost 1-3.

He appears in the line up but not on the pitch.

I'm considering a complaint to Nordeus. I doubt it will make the slightest difference.

Look at the photos, count the players. It makes no sense.