I played Gemcraft Labyrinth on a different computer than I usually do today. When I started a level I suddenly earned some quests, however I already earned these quests and they already were showing on my profile.
Also, I have quest that I have obtained that are showing up on my profile, but are not showing up on the game screen (where you see the quests below the game). I have not been albe to sign on with my regular comupter to verify if the problem presists across both computers.
Maybe you use different browsers? With chrome i see that i solved all quests on my profile and on the gamepage With IE9 i see that i solved all the quests on my profile, but on the gamepage i see that all are unsolved, then i start the game and six of the quests shown up, but the rest still stay at unsovled... when i play a level and i solve a quest it shown up as solved. I didnt try it with firefox yet, but i think it works fine there (like on chrome).
So if you use IE9 (or maybe another version) you will face this lil issue.
