An Ammo Dump with Tracks?

[WestKent5097]

I think that there is something in the code for fortifications/ammo dumps which is derived from vehicles, which is why you get these track hits/immobilization when attacking them. There was a post around recently on this when attacking a bunker.
Not sure if it can be fixed, but you could just treat it as immobilization of some support vehicles organic to the dump or minor damage not significant to destroy the facility.