Just for an example try to insert youtube link in the forum, it will be converted into youtube embed.
What happened, is the link appeared.... nothing else.

Are you sure this is working right? I've already pasted links from several sites, and have noticed nothing special happening.
OK... I paste a youtube link in a forum post, then I see only the link. I refresh the page, the embedded video appears. I navigate around a bit and come back to the forum post, and all I see is the link. I refresh the page and the embedded video appears again.

Not good behavior.
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