Comment 14 for bug 82442

The reason that this happens is that the FUSA applet is a menu while the other applets are using buttons. While I do believe that you are correct in saying that it is wrong, it would require a major overhaul of the applet to be able to do that. Either that or have themes render their menus differently.

Considering that the applet is deprecated upstream, I seriously doubt that this will ever get fixed. A distro patch would have to be huge (roughly like rewriting it) I'm marking it as "Won't Fix".