Just noticed that you have a style element in your <div id="gkPopupLogin" style="display: block;opacity: 1;height: 208px;"> Login Popup that hides some of the links... maybe remove the height:208px??
The first thing I will do to move to J4 is changing the template as the login process (login popup included) is not clear. The problem with the height is that it's automatically calculated, so I don't think if removing it will solve the issue.
Will check it.
Thank you very much for reporting this and i apologize for this inconvenience.