For their draw with France, Gundogan was back in action after meeting alongside Mesut Ozil with Turkish President Recep Erdogan.
Team-mate Thomas Muller said: "He has tried to put the situation behind him and played great.
"He presented himself well in the game showed he is going in a good direction. He identifies himself 100 percent (with the German team). Everybody saw that and we are going back to normality slowly."