YSort as a child of YSort does not draw on canvas from _draw() function

[ohin]

Godot version: 3.3.1

OS/device including version: Ubuntu 20.10, Intel Corporation HD Graphics 620 (rev 02), driver=i915, GLES3

Issue description:
YSort, which is direct descendant of parent YSort, with script attached and draw_circle call in _draw function does not draw anything. I am expecting it to draw on canvas.
My use case is to draw helper data in the editor.
When enabled is set to false on the child YSort, circle appears.

Steps to reproduce:

1. Create new 2D scene
2. Add YSort node
3. Add another YSort as a child of the first YSort node.
4. Attach new GDScript to the child YSort node.
5. Override _draw function.
6. Call draw_circle(Vector.ZERO, 50, Color.blue)
7. Error: no circle is drawn. However, on parent YSort node, the same script draws the circle.

Minimal reproduction project:
YSortBug.zip