Hey,
I have this Problem. At a wall I entered a window like the first jpeg.
But at the site of the window left and right I want that the wall materials are turning.
So at the second jpeg I try from the Properties to make them.
But you can see at the third jpeg it kind of works but only in the one site of the window. At the second site the material of the brick turns to white!

Any idea what I do wrong?
Thanks
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