2.5D decobrush broken (Zbrush)

Scruples

Suddenly this brush isn't working for me, it's doing this.

and just so I don't confuse anyone, I mean this brush (since there is another brush called decobrush in the regular brush panel).

Scruples

Bump

throttlekitty

Is the whole document masked? I see the brown border you tried to draw doesn't cover up the nondescriptive mess in the middle,

Scruples

I didn't try to draw any brown border, that's Zbrush's interface.
Here is a gif to better illustrate the problem, at the tail and sometimes in the middle it just kinda shoots off into space.

at the start is expected behavior, which doesn't work the moment I load any model to project it onto.