Strange things happening with smoothing groups.

Hello!

I’ve added this brush a smoothing group and now this is happening:

Does anyone has an idea why this is happening?

Thanks!

gonna need a bit more context. i cant really tell what the problem is or what im looking at in the picture.

You need to seperate them. Due to the way source splits stuff up, sometimes you get very wonky wireframes which can result ins weird smoothing errors.