Every now and then, somebody asks why '''Firefox Sync fails''' so hard when it comes to '''custom search engines''' such as those installed from mycroft.mozdev.org, now https://mycroftproject.com/ for no apparent reason. We are talking about OpenSearch standard and Sherlock. As of now, the search results on https://support.mozilla.org are either archived or unanswered. Please work on the ranking of search results so users can see * '''when''' a thread has been started / last updated * which answer is actually solving the problem or '''at least linking to the correct statement of the developers''' concerning the topic.