The bug substracting gems from just opening the shop is still on the loose. I've lost gems fom it more than once now and it usually looks like this: I pick up gems from the gem mine, open shop a d poof, the picked up gems are gone. This is incredibly feustrating considering that I've sunk many gems upgrading the damn mine in the firs place. When exactly are you going to fixt this so I can maybe stop playing till then.