If the solution is to sanity-check the username field, this could be a low priority bug.
If the solution involves working through everything in RFC 7055 that Sam suggested, this probably involves more work and is considered a wishlist item.
If the solution is to sanity-check the username field, this could be a low priority bug.
If the solution involves working through everything in RFC 7055 that Sam suggested, this probably involves more work and is considered a wishlist item.