I’m having issues with engineer rifle and rocket turrets not building on some areas. Often these areas are areas where they would come in handy but alas you try to build them and thier skill cycles but does nothing. I certainly hope this is a bug and not a feature.
One such area is the entrance to the dredge tunnel near Podaga Steeding Waypoint in Snowden drifts, infact I cannot build turrets anywhere inside that tunnel complex.
Please look at this, its only one example but there are others I have ran into from time to time.