Shadow issues with the modelling tool

I am working on creating a roof. I used the plane cut tool to cut an angle. The roof on the right is how the roof should look. The roof on the left is what happens after using the plane cut tool. The shadows get mest up and I have tried everything and I can not seem to figure out how to fix it.

Any help is greatly appreciated :slight_smile:

Can you post a screenshot of the settings you are using for the plane cut? And what version of UE you are using? (if this is sample content that we can download and try to reproduce the issue on, that would be ideal…)

((apologies in advance, but you might not hear back from us until Monday due to holidays))