Bug Upgraded My Bank For Free

Im pretty sure i managed to upgrade my bank for free.
i had 13 emeralds in my inventory and im pretty sure i only had 5 eb blocks in my bank
I clicked on the eb and dragged it over onto the glass pane that says upgrade i clicked it by accident
my bank got upgraded and the eb got thrown onto the floor i still had
i picked them up and it was still 5eb

Now im not sure 100% sure was it 5eb at the start i didnt pay much attention

This happened in beta so im reporting it here

 

How much does it normally cost?

 

If I'm not mistaken, the first upgrade costs 4EB.

 

No, it actually costs 40 last I checked

 

1st - free
2nd - 4
3rd - 9
4th - 16
5th - 25
6th - 36 eb

 

So according to these two, it seems like you've found a dupe glitch. In which case; don't attempt it again. It's bannable.

 

Well is this in the beta? (I mean its in the Beta feedback section) if it is I see no reason to not attempt it again isn't that what the beta is for?
Edit: I'm blind, but yeah it happened in the beta so by all means more people should test this IN the beta

 

Its in beta so i can do it again to see ifs actually a thing since after the update comes out beta classes get deleted

your 100% right more people should test it in BETA

 

WHAT
BANK UPGRADE?!