Canvas Problem

Good morning and wishes to everyone.
Today is the workers’ party I believe all over the world.
For all those like me, however, that a job still does not have a double wish and we hope to find a new job in the coming weeks.

I think I’m wrong, or maybe there’s a bug in the canvas.
As you can see in the picture I have a window, inside a container control, and in container control a canvas
Container control is as large as any window that holds it
While the canvas in the cc is as large as the cc less the size of the listbox.
The canvas as seen from the colored part in a gray of different shades seems to have its origins not from the point where it is put (left 130 px) but from point 0, ie from the beginning precisely the CC.

DXF project …