In the JF-17, I am unable to jettison only the fuel tanks from pylons 3 and 5 when in air to air mode or in navigation mode.
Using the selective jettison function in the SMS page I am able to jettison weapons from any of the pylons. I am alson able to jettison weapons and fuel tanks from any of the pylons at the same time. It is only a problem when I try to jettison only the fuel tanks and nothing else.
[Problem solved] I was trying to jettison the fuel tanks while going above 400knots TAS. This is not a bug.