xmonad and read it later

I am using xmonad and the read it later extension 开发者_Python百科for firefox. Now, if I want to tag an entry in the read it later list, the list disappears (instead of giving simply focus to to tag textfield) and a very small empty window occurs. (Using gnome everything works).

My first thought was to find out for example the className of ReadItLater using xprop |grep CLASS, and add something like this in my xmonad.hs:

  , resource  =? "readitlater"       --> doIgnore

However, this doesn't work since if the list is open mouse and keyboard control are bound to the list.

Any ideas how to make tag editing work in read it later under xmonad?

A trick which may help to get the props:

$ sleep 10s; xprop | grep CLASS

Then go to firefox and invoke the extension. In 10 seconds xprop will be activated.