Operating system: Ubuntu Studio 18.04 64 bits
Graphics card: GeForce GTX 970
Blender Version
Broken: 2.80, 25772c9e1d2d, blender2.8, 2019-01-26
Short description of error
Change in the definition of the line of a Layer of a Stroke, from soft to hard when adding more than one Fill with active Clamp, located above the first Layer with Line.
Exact steps for others to reproduce the error
In 2D Animation create a Grease Pencil object, draw a Stoke with Line (plus Fill, too) in a first Layer, in a second Layer create another Stoke with Fill in another material. And in a third Layer another Stoke with Fill with another different material. Activating the Clamp of the second Layer changes the definition of the Line of the first Layer from soft to hard (pixelated). If the Clamp of the third Layer is activated, it also happens, but if the third Layer is hidden by activating the Visibility icon, the line becomes smooth even with the second layer with the Clamp activated.
