AP 1.10 on Windows 10:
When painting on a single pixel layer the strokes are blended with the wrong gamma curve. Instead of using linear gamma it seams to be a 2.2 curve.
First image:
Simple strokes (no wet edges) on a red background. At the edges there is the typical halo that appears when the blend gamma is not linear.
Second image:
A pixel layer on on top of the red fill. This layer is set to a use a linear blend gamma (value 1). In this case the stroke edges ar