# Blender wouldn't paint neither face sets not the mask anymore

I got blender into a somewhat strange state after I decided to add some vertex colours to my sculpt for better visibility.

As I load the save file I cannot paint the face sets anymore, not can I paint the mask. 'Invert mask' would do nothing.

Creating a new mesh and trying to sculpt it won't work.

Effectively, I'm forced to go back to my older save, or copy everything to a new document.

I think the only things I did to get here was:

• set up the vertex paint material
• tinker with the viewport display to show vertex colours
• actually paint some over the mesh

Any advice on how can I force the document back into an usable state?

Note 1: Here's the blend file featuring the problem.

Note 2: The overlays are indeed enabled.

The problem is the Armature. Modifiers prevent Hide, Mask, and Facesets in Sculpt mode. Usually, you get a warning like this:
Armature, Cloth, and Hair/Particles, and all the other physics are also Modifiers. It's probably a bug that Blender doesn't warn you if you have one of these 3 activated. (Dynamic Paint gives you a warning.)