Line color problem

 

Hey there,

attached you´ll find a screenshot which shows a white rectangle (OBJ_RECTANGLE) and some light blue lines (OBJ_HLINE). As one can see, the lines turn to light yellow when they cross the rectangle, which looks kind of "dirty". I could not find any option/parameter to turn off this kind of complementary transparency effect which is responsible for this behavior. Does anyone have an idea how I can avoid this and keep the lines light-blue also when they cross the rectangle area?

Thank you in advance

Doerk 

 

 

 

And in other colors it looks like that ... 

 

OBJ_PROP_BACK

 
Yes, is set, but that does not explain that it starts to mix colors when the saturation is low. if the saturation is high, this behavior does not occur.