The Stack Exchange button links to http://stackexchange.com/
Clicking on the button opens the dropdown menu, so accessing this link is only possible by using shortcuts to open the link in a new tab, or by right clicking the button.
However, when clicking on the button when a page is still loading, the JS won't be active yet and you get redirected to http://stackexchange.com/, making you wait again before the dropdown is ready for use.
For me this happens when I misclick, or when I want to navigate from MSE to a child Meta, because there's an extra step needed, you need to navigate to the site first to get a meta link in the dropdown.
Can the link be applied after the dropdown menu is loaded?