I using UE 4.11.1 and i cant make BSP Subtract

I watch video where i see how i can use subtract to make dors, windows, but when i make any geometry from BSP subtract it happen invisible but cant make holes in other geometry. Is this bug?

Hi urkqsrk,

I see that you already have a question open on this subject. I am closing this one as a duplicate, please continue the conversation on the other thread.