Unable to fire at stardust?

I just played a (weird) match with a friend, a bit after 19:30 minutes a small blob of their shield units runs into a position where I had a gauss turret and a stardust, both on a raised terraformed platform. My opponents' units successfully took out the gauss turret, but did not seem to be able to fire at the stardust while under the shadow of the terraformed platform, nor when the units were moved away to try and gain distance... though it was able to shoot at them just fine. I'm wondering if this is expected behavior, perhaps the units were unable to draw a trajectory on the stardust because it was somewhat occluded by the other terraformed spike, and they required a really specific arc in order to hit it? Or is this sort of thing supposed to be wiped out by the earlier patch.

https://zero-k.info/Battles/Detail/880739

a time stamp please.. it proves you watched the replay too.. you need to check it yourself to be sure its a bug and the units when selected have normal orders

solved not a bug.. reason is.. thug range means that they need to be close to shoot the distance in height required..
ie.. distance to target + distance in height = allot.. so they need to be very close to pillar to shoot..
but when super close they are obstructed by the lip of the stardust terra.. the stardust is elevated and so it can shoot further then normal.. it also cant shoot the close units but can shoot the far units.. in this case the terra was so tall that thug could not possibly hit the turret at all.. or maybe a very slim perfect range.. i advise you bring a rouge to deal with terra targets. or retreat the felons to recharge