Hi there, apologies for the delayed reply,

yes, this add-on works in 8.5.1 - I've given it a quick test in case anything has changed recently and it all worked as expected.

Adding Google Translate is a very good example of why I built this add-on, it's designed to allow you to add scripts and other content that may break editing, but in a way that only outputs the scripts when you aren't logged in as an editor. I've used it myself several times on projects where I'm given a third-party script that is horribly written but I've still had to embed it.

-Ryan

Works like a charm. Ordered 11 licenses for our projects :)