This one was reported by some users but i didn't see it get the reported tag so it still persists for some while. When in mav VIS mode you start the procedure by slewing the TD box on the HUD and pressing TMS fwd to ground stabilise it. You can see it is indeed stabilised, while pitching up and down the circle which represents the mav LOS stays in place and does not move. Then you proceed to lock a target on the WPN page with TMS fwd. The target is locked and again pitching up or down doesn't affect the circle which stays in place again. But then if you want to unlock the target and press TMS aft you lose ground stabilisation and the circle gets stuck on the HUD like it's boresighted and moves with the jet but not at the actual boresight point which is the cross rather to the spot it was when you pressed TMS aft. So to get ground stabilisation again you have to do the whole procedure from the start again. There is another bug with VIS mode which is not in this track , when changing station the mav LOS always goes to boresight and the same happens when firing one it switches station for the next and goes to boresight again.
steps i did : AG mode - mav in VIS mode in SMS - open WPN page - slew the TD box from the HUD to the desired spot - TMS fwd to ground stabilise(notice the pitching up and down to show that it is indeed ground stabilised) - WPN page becomes SOI - slew the missile to lock a target with TMS fwd - TMS aft to break the lock - lose ground stabilisation ( notice now how the circle is stuck on the HUD and it moves with the jet up and down)
mav in VIS becomes unstabilised.trk