Can you check on the page where the link should hide, if you have any javascript/jQuery related errors in the browser console.
PLease share. If no error there , inspect the list element of that menu and share a screenshot of its html.
For the cover, I'm not sure. Correct me if I'm wrong but in most ES users list the cover is not shown. It's only show in popover.
And It may be resource intensive to load every covers if there are many visitors. This may also be the resaon that popovers are loaded with AJAX to only show the data on demand.
- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.