" Key " disappeared from my inventory

[xMentalityx]

Hello Guyz, i see today 1 bug what make me so *cricket*ing angry.. i was with 30+ key yeastarday and i open inventory today and i was without key only 1... ho is possible? :/ and i buy 10 key on market place and just now in this moment i have just 8 key... how?.. i dont open nothing, i was just afk and see if that was bug and yes is a bug i think! so what now?!