Solution : https://service.sap.com/sap/support/notes/990246 (SAP Service marketplace login required)
Key words :
web dynpro context menu, browser-specific context menu, browser context menu, terms context menu, import support package 12, firefox/mozilla, event handler, javascript reason, declaration error, higher version
Related Notes :
| 1296463 | Main Browser Note for NW 7.0 |
| 990034 | Firefox browser for end users |