coreg_ifg_topsar.py problem using snap2stamps

HI! everyone,I have a problem when I using the snap2stamps package.After the coreg_ifg_topsar.py processing, the AOI BBOX is different from that which I choose in project.conf file. The lotmin latmin and lotmax latmax is correctly, but the result in coreg_ifg_topsar.py is wrong, I have search for the solution for three days.If you know how to solve it, please teach me, thankyou!