Solution : https://service.sap.com/sap/support/notes/578554 (SAP Service marketplace login required)
Key words : 
crashes bug fixed slow termination / termination failure bug fixed, bug fixes missing thread library initialization fixed, <inetpub>\wwwroot\sapportal\scripts\compress, <j2eedir>\cluster\server\services\servlet_jsp_properties file, enterprise portal compression filter module, chunked requests implemented integritytoken handling, ssl client certificate forwarding implemented, enterprise portal compression filter, base64 encoded byte array, /services/http/properties file
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