Just recently I noticed that if the Essential Grid plugin is installed and activated, if a user with Author capability is using Internet Explorer 11, many of the Wordpress Classic Editor functions do not work. For example, clicking on any of these buttons/links - Screen Options, Add Media, Visual/Text tabs, etc. - do nothing.
I've narrowed it down to Essential Grid and IE11 - deactivating EG allows IE 11 to work, and when EG is active, the editor works normally in FireFox.
This is a big problem for me though, since I'm running an Intranet site and my users exclusively use IE. Do you have any suggestions for me? If not, I will probably have to find a replacement for EG. Thank you!