Sculpting brush strokes not working on 45 degree surfaces

Support Modeling
1

I have an object I’m trying to sculpt. The brush strokes are weird on the following surfaces. Everything else is working fine so I don’t understand what the issue is. The topology is fine. I checked that everything was merged and connected. The normals are fine. I can’t diagnose what’s causing this!

Screenshot from 2025-04-05 09-55-15
Screenshot from 2025-04-05 09-55-15705×534 126 KB

Attached is my file. I applied a bunch of multiresolution modifier steps to it and then started sculpting on it.
sofa beveled2.blend (1.0 MB)

2

Object’s Y scale is -1 and normals are reversed. Apply transformations (at least scale) and recalculate normals

3

Oh my I didn’t even realize that! Thank you!