Solution : https://service.sap.com/sap/support/notes/1142345 (SAP Service marketplace login required)
Key words :
facing browser cpu increase time, history tray grows, history reason, sp14 patch #1, future versions, navigation, prerequisites
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| 1146556 | SAP NW Portal Platform NW04s, SPs14 - Known Issues |
| 1117743 | SAP NetWeaver Portal Platform NW7.0, SPs15 |
| 1101189 | SAP NW Portal Platform NW04s, SPs13 - Known Issues |
| 1052127 | SAP NW Portal Platform NW04s, SPs12 - Known Issues |