In that case, I think one of my players (Florian Moon) gained exp. I only had 2 players at pitiful exp, now I have 3. I counted his minutes, it was 129.6 League minutes, or 293.6 Total minutes (including scrimmage, cup, etc)
One of my players (Freitkenhauer) already has 600 League minutes, 850 total, still no pop. Should be soon though.