I've got ISO's current defect report for ISO 29500. It has 809 pages. That are 71 pages more than the full specification of ODF 1.1! It will be a lot of fun to read it but I'll probably check the spreadsheet stuff only.
Can you provide a link for?
I am not allowed to redistribute the document but you can try to ask kimura _at_ itscj _dot_ ipsj _dot_ or _dot_ jp.