WONTFIX responses aren't limited to ML.
My favorite is the one where mysqldump produces a corrupt dump if a table contains a binary column. You can add a switch to fix this (--hex-blob), so binary columns are dumped in hex.
Making blobs dump as hex by default was rejected as WONTFIX.
Producing an error message that the dump file would be useless because of a blob column was also rejected as WONTFIX.
The reasoning for broken-by-default is that users are supposed to RTFM and use the proper dump arguments.