I've done so much custom coding that I'm not even sure where X begins and my work ends anymore.
Usually I fix the simple stuff. But, this was a JS issue that I could replicate on a virgin install of Wordpress, X Theme, and Cornerstone so I figured that I could not have been the only one affected.
I'll have to research the issue more thoroughly when I have the time. Perhaps, there's a change in the html triggers for the new JS that I haven't yet found?!
I've been using X since like 2015 and have a lot of legacy stuff in my sites. Why do you guys insist on making "improvements" on what was once a nearly perfect and beautifully simple theme? Alas...