There's another bug kinda related to this:
menu @t {
rclick:{ echo -s rclick in $active ( $+ $mouse.x $+ / $+ $mouse.y $+ ) }
}
menu @t {
rclick2: echo -s clicked rclick2 in $active
}
Then /window -p @t and right click in the window, the following appears in the status window: * /2:: not connected to server