Press Ctrl+H to open the History sidebar, search for the site and right-click a result > Forget About This Site.

Sorry but that did not solve the problem. Thanks for the effort though.

Thanks, Dan

Does it still happen in Troubleshoot Mode?

Yes, it still occurs in Troubleshoot Mode.

Press Ctrl+Shift+Del, tick the "Site settings" checkbox and untick everything else, then click the "Clear" button. This will clear permissions, exceptions and zoom settings for all sites.

Success!!! Thank you so much for all the help! That was driving me crazy.

Thanks, Dan