You want to keep blaming the host, I use OVH and I've even gathered the raw data.
Those are the headers and body responses respectively, which was recorded on the same...
OK, and for control purpose, what do you have to say about the youtube link? As I understand YT link isn't even a redirection like IMGUR.
I've spent last forty minutes trying to get my mind around this erratic behavior XF 2 has. It is also my first time to play around with XF:MG, so bear with me.
It seems that the thumbnails for embedded media just simply decides to construct a thumbnail or not, there is no exact pattern or...