@lights1 said:
I don't know how that is happening, as i am completing all of those rectangles in succession, in the same selection context, in the same plane view. one after the other, some are thick, some a thin.
I have tried on other walls in my existing model and the same thing happens.
However, i just drew a new cube, and had no issues on the new cube. It is something happening to my pre existing shapes. I am confident all walls are parallel.
I suspect that the rectangles that have thick profiles do cross an invisible dividing (diagonal) edge in the wall face. You may see it when turning on 'Hidden Geometry'. But even when you don't see it (issues with the larger wall face(s) within tolerance to have 'Hidden dividing edges' showing, the wall face(s) may be incorrect.
Drawing rectangles on either side of the invisible diagonal creates thin edges 'On Face'.
Drawing rectangles crossing the diagonal produces profiles.
Just some thoughts.