Texture, Painting vs Preview color differences.


I wonder why the texture differs in image editor when painting compared to the properties panel preview of the texture. It’ doesn’t really affect me or my work but. I am curious why.

Tried all Color Spaces and it’s always a bit difference.
In Color Space > Linear I would assume it looked the same but it doesn’t. My theory was that in 3D view and Image Editor it’s always displaying in Linear.

I turned up alpha for the brush to 100% so it shouldn’t be a bit transparent (and mix background)

Anyone got an explanation?