Achievement not unlocking

I'm playing MELE on PC. Trying to unlock all achievements. The Incineration specialist achievement is marked as 25/25 in game, but is not marked as complete. I play as Infiltrator, so I use incineration a lot. I've even placed squad mates in cover away from battle to make sure they don't interfere with me burning enemy armor. I've tried clearing the cache, uninstalling and reinstalling the game, and restarting my computer, but there has been no changes to the achievement progress. What can I do to unlock this broken achievement?