Red alert: Enemy builds on top of tanks

[Diranus]

Hello,

In mission mode, there is a bug:

I destroyed a allied cyborg factory and moved two tanks to the place, where it was.

After a few minutes, the enemy just builds a new cyborg factory "on top" of these tanks. This shouldn't be possible because you usually can't place buildings on areas occupied by units.

Here you can see, what happened:
https://imgur.com/OSsP63Y

[NethIafin]

You need to tell what mission this is

[Diranus]

It was "Behind the lines" of the soviet campaign.
There are two similar missions with the same name. But I'm unsure which one I played. I think, it was 4a :-).