Dear Experts, Looks like WSA 8.5.3-069 not able to process HTTP PATCH method, however the version is not listed in CSCuj39346, any clue any similar bug on WSA 8.5.3-069 causing PATCH method error?

hey guys, anybody notice this?Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICESK9-M), Version 12.2(54)SG1, RELEASE SOFTWARE (fc1)Technical Support: http://www.cisco.com/techsupportCopyright (c) 1986-2011 by Cisco Systems, Inc...