Using unspecified sources, The Verge claims that Microsoft has successfully fixed the messaging bug in Windows Phone that was found in December. Microsoft quickly determined the cause of the bug and began testing a fix, which is now apparently ready for distribution.
Originally discovered by Khaled Salameh, the bug would crash and permanently disable the messaging hub upon receiving a special text message, be it through SMS, Messenger or Facebook Chat. A similar issue has since been reproduced on many Microsoft desktop applications as well, though there’s no word yet on whether and when those will be fixed.
As for Windows Phone, the fix is expected to be included in the upcoming Tango update, slated for April.
Source: The Verge