Your player Mercade was injured after 7 minutes. The 6th player (Artime, a good SG) had to go in and replace him. Since he was also a replacement at the SG spot and your starting SG (Camon, a very bad SG with virtually no stamina) became extremely tired, the coach decided to put Artime in the position he'll make a better use of his skills, essentially swapping positions of the two players, since they are both equally bad at PF. It's not a strict following of the depth chart pe se, I agree, but it's a very specific case (only 6 players fielded, the stamina and skill level discrepancy between the players).
The amount of the minutes of the players is correct, they were just a little bit mixed up due to those swaps. Artime should have played 41 minutes of the PF spot, but due to Camon's tiredness, he only played 14 there. We *could" categorize this as a bug for not following the orders strictly. Then again, we can explain the rationale behind the coaches moves.