HTTP profile stops working intermittently and starts working when we apply http parent profile. Our BIGIP OS version is 13.1.0.3

By http profile stops working, I meant, LB stops receiving packets, but when we reapply the http parent profile it starts receiving packets.But, by doing so, LB works only for few hours and again after some time it stops receiving packets. Thean again we reapply the customised http profile and it starts working. This process has been going on for few days.