Hi,
The "Grunge Pattern 01" brush does not work with the Pixel Tool.
In previous versions 1.8.3 and 1.8.5, this brush worked with the Pixel Tool.
This brush gives a good result with the Pixel Tool, creating sharp edges.
This allows you to create textures of rough surfaces, dirt, plaster, etc!
Is something broken?
Texture below is created in AP 1.8.5