Did not get an mastery shard on defenetely not dominion as thresh.

Soo i played an game on DnD(aka dungeons and... Dominion). Got an s as thresh, but the popup did not appear. After the game i looked in my shard inventory, and i did not see any new tokens there( i already have one). If it is an bug then plx give me an token for thresh. It is probably an bug because i used to get tokens on the other rotating game modes. THATS ALL. My username is CatDogOFDOOM and i am playing on the EU nordic and east servers if you want to confirm it yourself.