Weird SubD flab

Hello forum,

I’m a SubD noob and currently working through the latest tutorial (very good tutorial) from the Rhinoceros3D channel.

In my model, in box mode, I am seeing a surface overlapping with other surfaces. As far as I know, this is usually caused by edges/vertices of neighboring faces crossing over each other. However, when I look at the edges and vertices in wireframe mode, I can’t identify entangled stuff, crossing over each other, looks all good and clean to me.

If someone could give me a hint about what’s going wrong, I’d appreciate it. Thanks!

VR controler.3dm (277.1 KB)