When you click on the huts and the outpost, they grey out and border like normal, but no window pops up. Either add a window or remove the greying effect.
EDIT: If you start to drag the fireball glyph in tutorial 3 it sends the sparkles over to the conversion box even if it's not time to convert it.
EDIT: I don't suppose this is literally a bug, just a problem. You can do fighter bronze before tutorial 4, and you can unlock new items before you have Beezar or the locker. More importantly Beezar. It might be worth adding a little thing to fighter bronze like you do with other challenges and with all silvers if you don't have shops yet. The little purple text "complete the tutorials first" or "bring back your first trophy" for fighter bronze and "get some shops" for the silvers.
EDIT: The second paragraph of the wizards tower level 3 flavor text is white not purple, and the alchemist level 2 flavor text is white not purple.
EDIT: If you level up in hexx ruins and your mouse is over a revenant, it throws the battle predictor until you move it off and back on.
I speak chaos.