when user comments on the video, you need to manually clear the cache or wait for its cache lifetime to expire before you can see the comments
I am not sure if this is a bug or the comments are also being cached or not being updated after new comments are posted
I wish there's a work around with this problem. like not cache the comments or clear the cache of that page when someone made a comment or load it via ajax when user clicks on the comment or something.
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