Hey, so I was upgrading the Improved Offense 2 -> 3 and then out of curiosity I clicked on Improved Defense to see what sort of requirements I need before upgrading it. I had the option to "Finish Now" the building for ~200 gems, so I did... it both upgraded my Improved Offense from 2 to 3 and my Improved Defense from 1 to 2. Could you check this out please? Seems to be a bug, basically made 2 upgrades finish faster for the price of one.
#Bug in the School upgrades
stoic dragon
vapid schooner
are you sure it didnt just count both of the upgrades prices?