Tried to use the non minimized version of the decoder, didn't help. Maybe I need to revert to the separate file version?
Maybe the QR code text disturbs some code. Decoding on other sites it looks like qrme appends a new line (0x0A) at the end of the text. Maybe that's not good. Or the md5 itself, although I deliberately append an X in the front so it will start with a letter instead of a number.
Find out why.