Just a big ol' coincidence that no one in the world knew anyone who had a mount, now suddenly they're appearing after a server restart. Coincidence! Tinfoil hat! We never landed on the moon! Elvis is still alive! Bin Laden is still alive!
Or we can rationally look at the fact that this is the third boss with a bugged loot table this patch. Previously I thought it was only 2 with Sha/Galleon and Feng, but I had forgotten about Shekzeer Heroic for a time.
Glad to see this issue is fixed, I really wish they would fucking speak up about it though instead of pretending it never happened.
Afterthought: Character named "Buu" in a guild called "Akatsuki". Made me lol.