The only change compared to your original should be that I load tm.el,
activate tm-menu-mode, and use M-g <n> key bindings instead of C-l and
so on.

With this, emacs -Q, I

- open tty-1, tty-2, tty-3 in that order

- then I click in the yellow frame

- click on the Buffer menu in the menu-bar

- click on *Messages*.

Effect is a bit strange, some complaints about mouse bindings in the
root frame, but no assertion.

So I guess I'm missing something important. Any ideas?