It has happened to me 2 times. The first one i really didnt noticed because my team had won like 5 or 6 -0. So when the match was over i got my clean sheet and assist bonus, but then the goal bonus appeared, but i wasnt sure if i scored in the match so i just continued.
In another match it happened again and this time im sure its a bug because in a previous match the newspaper said i had scored my 2nd goal of the season and i went to the squad screen the confirm it, then this goal bonus screen appeared and i was sure i hadnt scored in that match so i went to the squad screen to see if i really had scored, so i would have 3 goals but it said 2 goals.
So i "received" a goal bonus not scoring any goal.
(in the contract i dont have a goal bonus)