Странное поведение jQuery.html()

Enum xmlParserOption {
XML_PARSE_RECOVER = 1 : recover on errors
XML_PARSE_NOENT = 2 : substitute entities
XML_PARSE_DTDLOAD = 4 : load the external subset
XML_PARSE_DTDATTR = 8 : default DTD attributes
XML_PARSE_DTDVALID = 16 : validate with the DTD
XML_PARSE_NOERROR = 32 : suppress error reports
XML_PARSE_NOWARNING = 64 : suppress warning reports
XML_PARSE_PEDANTIC = 128 : pedantic error reporting
XML_PARSE_NOBLANKS = 256 : remove blank nodes
XML_PARSE_SAX1 = 512 : use the SAX1 interface internally
XML_PARSE_XINCLUDE = 1024 : Implement XInclude substitition
XML_PARSE_NONET = 2048 : Forbid network access
XML_PARSE_NODICT = 4096 : Do not reuse the context dictionnary
XML_PARSE_NSCLEAN = 8192 : remove redundant namespaces declarations
XML_PARSE_NOCDATA = 16384 : merge CDATA as text nodes
XML_PARSE_NOXINCNODE = 32768 : do not generate XINCLUDE START/END nodes
XML_PARSE_COMPACT = 65536 : compact small text nodes; no modification of the tree allowed afterwards (will possibly crash if you try to modify the tree)
XML_PARSE_OLD10 = 131072 : parse using XML-1.0 before update 5
XML_PARSE_NOBASEFIX = 262144 : do not fixup XINCLUDE xml:base uris
XML_PARSE_HUGE = 524288 : relax any hardcoded limit from the parser
XML_PARSE_OLDSAX = 1048576 : parse using SAX2 interface before 2.7.0
XML_PARSE_IGNORE_ENC = 2097152 : ignore internal document encoding hint
XML_PARSE_BIG_LINES = 4194304 : Store big lines numbers in text PSVI field
}