I have noticed that since I upgraded to iOS 7 all youtube videos that users embed in threads here do not show in the posts. Instead, there is just a blank space where the video should have been displayed.

At first I thought it was a glitch in iOS 7 but Apple has updated it 2-3 times in the last two months and the problem is still there... I am I the only one experiencing this?
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My piano channel on YouTube: Link