The patch adds a new parameter in the node editor section of the theme to control the amount of roundness used in drawing the nodes rects.
I have noticed a problem in the corners drawing when the roundness is next to 0 though, it's almost invisible with a dark background, but it's more noticeable with a bright one:
I found out that it is caused in the function the draws the shadows, by this (I guess antialiasing) function:
Is this expected or it's a problem with my gpu driver?
And if it is expected would it be ok to"solve" it by disabling the AA if the roundness is equal to zero?