I don't know about anyone else, but when using QS I get messages liken "that item isn't yours" or something to that effect. It comes up in the red highlighted text - this is a new error since the beginning of Peka-Boo festival.
Alternatively, if I go to my inventory then back to QS it solves itself. Just wondering if anyone else is having issues...and if it will be fixed soonish? THANKS.