There seems to be a problem with window.opener that I am facing.
When I utilize window.open("url"), the child window will reference window.opener properly. However, if I use GM_openInTab instead, which is supposed to be the equivalent option for cross browser compatibility and essential for tab opening, the window.opener value for the child window turns out to be null.
Why is it that GM_openInTab's child window has a null window.opener value? What can be done to resolve this issue?