Hi, everyone!
As of this moment I have contributed with 10596 edits to TVmaze. It's been days since I reached the 10000 edits target. If I'm not mistaken, I should have already been awarded the Master Contributor achievement granted to those who have contributed with 10000 edits.
With all the previous related achievements (Contributor, Returning Contributor, Top Contributor), I was granted the achievement and received the respective notification as soon as I reached the necessary target (1 edit, 100 edits, 1000 edits respectively).
I'm not sure what is different with the Master Contributor achievement. Is there a bug? Is there a glitch? Or am I missing something?