The Learned code at the message end is NOT a RC5 code. It consist redundant bit #3. Other code is "system=5 code=0"

So, the value at "codes" section is "code", but the "system" is 5.

Real odd RC5 code for button "0" is
0000 0073 0000 000b 0020 0020 0040 0020 0020 0020 0020 0040 0040 0040 0040 0020 0020 0020 0020 0020 0020 0020 0020 0020 0020 0ce0

You could use M.Majoor's tool "RC5pronto" [Link: home.hccnet.nl] to convert 5000-codes into 0000 form

I think it is a bug of Streamzap...