Is there any word from Microsoft since this seems to be an Xbox exclusive issue? As provider of information to developpers and manager of the cloudsave protocol for their platform I believe they share a bit of the responsibility as well.
That may be, but bug fixes from Microsoft would likely take even longer and are not guaranteed to happen at all. Often software developers need to code around bugs in the software of their platform (operating system, graphics drivers, ...) simply because they can not know if a fix ever comes around.