so yesterday was wheel of destiny event right so i saved my free spin of the day for that( im member) so i spun i think got nothing besides fortune potion and doom xp so i did what i normally would do and go to bank and store it their. So today when i went to wheel of doom and spun got a hammer i said ok and a fortune potion, it was weird to get it but when i went back to the bank all of my doom draughts was gone and ppl are sayin fortune potion was renamed doom draughts but i had only 1 in their i saved 13 wtf................... and yes i logged out and back in only got back my potions...... and no i didnt spend any draughts i wanted to save for the sword that cost 20 draughts.
That's because you stored the items in your bank. The same bug happens (or happened? I am not sure if they've fixed it yet) for power gems. When you withdraw them, the items don't stack and you only keep what's in your inventory.