Solution : https://service.sap.com/sap/support/notes/1788440 (SAP Service marketplace login required)
Key words : 
components ep-pin sap netweaver portal priority recommendations / additional info category faq validity, ie10 1785100   internet explorer 10 release notes 66971   supported sap gui platforms 1458799   limited supportability, content administration -> portal content -> portal content -> content provided, sap -> admin interfaces -> admin iview templates -> browser document mode, customer component ep-pin-ai application integration, 3rd party applications require plugins support, running sap netweaver portal, ie10 1780239   unified rendering limitations, sap netweaver portal, -box portal framework pages
Related Notes : 
       
| 1785100 | Internet Explorer 10 Release Notes | 
| 1674501 | Controlling the Internet Explorer (>=8.0) Default Rendering | 
| 1770875 | HTMLB Support for IE10 | 
| 1780239 | Unified Rendering Limitations in IE10 | 
| 66971 | Supported SAP GUI platforms | 
| 1458799 | Limited supportability for Internet Explorer 8 & 9 |