Just tried the above with a live test, crashed the site.
What would be ideal is if Theme Horse updated the Clean Retina Pro to include a fix for everyone, since these things are now a “necessity” for Google and all your clients are subject to this. You guys are the programmers and know your own code inside and out, the customers don’t. If it’s as easy as adding or replacing a few lines, then it should take very little effort on your part to do this for everyone or at least provide a lot more detailed instruction. I really like using the theme and have no issues with continuing to do so (and continuing to pay for it), but only if the theme can stay relevant to the times. I’ve already started looking at other premium theme options and will cancel my account if you are unable to provide a reasonable fix to this problem.