When a window is spawned using EditorWindow class at (0,0), there is a slight gap on the left side

Steps to reproduce the bug:
1. Create a Unity project.
2. Use EditorWindow to create a new window at (0,0). You can use the script attached here.
Go to menu option and open the newly created window using EditorWindow class.

Expected result: The window is created at (0,0) position of the screen.
Actual result: There is a slight offset on the left side of the newly created window and it is not at (0,0).

This bug is specific to the Windows editor.