Yes. I had no problems with the PGWP.
The fact is that I was working as a part time while studying. Since I was allowed to work full-time between breaks as long as I am not studying. So I thought it is the same as working after completion of study.
Also, I got the job offer while I was on the last semester. If I hadn't accept the offer they would have offered to another student.
But if I knew I wasn't supposed to work after study and before applying PGWP, I definitely would not have started working untill I apply PGWP. My bad.