When buying from an increasing number of shops the purchases are doubled. I suppose technically it means that whatever script is in place runs twice.
And this has been going on since Peka-Boo, which was years ago. I also think that was when the new event shop layout was introduced, which is the most common offender here.
It has supposedly been fixed several times. one - two But it has never taken for me.
This affects (but is probably not limited to):
And most recently with the shops revamp this also happens when buying from user shops that have more than 1 of an item in stock. So goodbye quests.
This also may or may not be related to that whenever I use the Mystery Box the amount it says I'll pay and the amount I actually end up paying never match up either.
On Windows 7 and have tried both chrome and firefox.
Huh. I have never had this happen to me. I'm using Safari on OS X 10.11.