[1.5]Ships set to patrol or protect are targeting invulnerable build storage

[lplates]

I have 40 ships of various sizes protecting one of my stations and set to "protect station'.
I've destroyed several enemy (HoP) stations in the area.

Most of the ships keep targeting the invulnerable build storage for the dead stations, even after I manually remove the order.

Behaviour example:
https://www.dropbox.com/s/amvbum9zrh9u5 ... 1.jpg?dl=0

Ships firing at build storage of Wrecked station:
https://www.dropbox.com/s/wcyngmlm5j4c4 ... 1.jpg?dl=0

Edit: Improved title