I've customised the pixel brush so that it is 1px in brush size, and this was the only setting that I've modified for the custom pixel brush. One of the custom brushes is set to the Normal setting and the other brush setting is set to Erase. When I'm using the Erase pixel brush to erase pixels using the stylus eraser after using the Normal pixel brush on the stylus pen tip, it draws a pixel after lifting the stylus eraser from the screen. This is not meant to happen because there shouldn't be a pixel drawn after lifting the eraser stylus from the screen. I'm using the Microsoft Surface Book with the N-trig stylus.

Reproducible: Always

Steps to Reproduce:
1. Create a custom pixel brush (derived from PixelArt_Square) with the pixel size set to 1 and type set to Normal
2. Create a custom pixel brush (derived from PixelArt_Square) with the pixel size set to 1 and type set to Erase
3. Draw on the screen using the stylus tip
4. Erase drawn pixels (or pixels that are not drawn) on the screen using the stylus eraser
5. A pixel should appear on the screen after lifting the stylus eraser

Actual Results:  
A pixel is drawn on the screen after lifting the stylus eraser from the screen.

Expected Results:  
Not draw a pixel / do nothing.

Computer configuration: Microsoft Surface Book (with i5 processor and nVidia graphics gpu configuration)

Memory: 8gb of RAM
Processor: 6th Generation Intel® Core™ i5
Storage: 256gb solid state drive
Graphics: NVIDIA GeForce GPU with 1GB GDDR5 memory