Captured space station's construction yard keeps a full queue

[Gorofin]

After capturing a space stations the construction yard queue is uncontrollable, maybe for year.
The queue should be empty.

Why I can't cancel private sector builds in the queue ? At a state controlled station I should be able to stop them (with paying back, if the private sector paid already for the construction order).

Save is on ftp.

[Canute0]

Go at the Ship & Bases Screen.

Select Freighters.
Click 2 times on the mission row. then the ships without mission should stay on Top.
Select all ships with yellow names and Scrap them.
Or Sort by Location, find it, Select the ships with yellow name at this location, Scrap them.

Repeat the same with Mining ships.

[Gorofin]

Ok, I can scrap them. But why I can't delete private ships from the construction queue ?