I mentioned that effect only with Foxtrots. I will look more thoroughly if I encounter that again, but that's unlikely that I right-click with Foxtrots selected, but not with other aircraft. Other aircrafts do not hesitate to fire whatever they have if they can.
Usually it happens when I maneuver around a large UFO with 2 aircrafts using afterburners. Eventually Foxtrot gets to the back of the UFO within a short range, and then UFO and Foxtrot begin rounding around each other, but torpedoes do not lock unless I disable afterburners, increase distance and then come back again (but if I fail on this, Foxtrot will be shot down).