Board Thread:Support Requests - Getting Technical/@comment-10637-20180201175109/@comment-9605025-20180201184649

Well,  and   are treated differently. Most noticeably,  can be thought of as a widget that the content host (YouTube) provides. As such, it brings in external code which I assume has some additional server load (though I don't actually know). Plus, bringing in external HTML, JS, and the like can pose a security risk. As such, Wikia tries to minimize doing so. You will notice that  is not in the list of recognized HTML tags.