Checking if anyone is using these themes. Finally Isolated an issue which caused deferred parsing of java script to fail. Thought I'd share it in-case anyone else is having any issues.
Module: LeoFeature - This module has an option "Show Drop Down Cart (flycart)". When set to YES, it causes a failure in deferred parsing of JavaScript. Set to NO it will allow Javascript parsing to be deferred.
Module: LeoQuick Login and Social Login - This module also causes Deferred parsing to fail. Simply disabled it rather than trying to isolate the issue.
Unfortunately, isolating the problem took nearly 3 weeks, with most of my time waiting for response from Leotheme. Usually found the response to be a single sentence comment which had little to do with the problem.
I finally gave up on leotheme support and isolated the problem on my own.