Comment 4 for bug 242223

The plugin consumes the event properly. Karl Tomlinson from Mozilla and made sure of that. It's probably interesting to note that the Firefox menu pops up before the swfdec menu. Also, Epiphany suffers from a similar problem. Only that Epiphany pops up its menu and the swfdec menu never shows up.

But if you don't have an idea what could cause it, I'll try to chase it down in other bugtrackers.