I don’t think so - they actually said in the patch notes they had fixed it so it would unlock. I think this is another unintended bug that will be fixed in the future.
Except they didn’t and every tier 12 player is still left without the badge despite what the patch notes say. That, or in some roundabout way, only applies to people who hit tier 12 after this update while leaving everyone who hit 12 well before this patch out in the cold until they patch it yet again.
Spot for tier 12 is gone from mine too. I though maybe I’d have badge 7&8 now, I was thinking those should unlock as we progress, but I’m still only at 6, as I was when I started the game.