I experienced a funny but temporary glitch. What happened was I got a Tank Coin for playing for 3 days in a row. But I clicked the SHOP button before I received it and it said I had 21. It went back to normal, so I can't show the glitch now. But has anyone had this before?
Before kChamp revamped the shop, you could click the "?" tanks, and it would re-load the store, but it would say you have 21 coins (I could be wrong on the number), but you didn't have that many coins, in reality. So, yes, this has happened before, but I don't think it has since the revamp.