"Alt" key-press events are captured by Unity global menu, even after turning-off "Show Menubar".

After turning-off "Show Menubar", key events with the "Alt" key pressed does not generate an Escape+Letter ASCII code on the TTY input stream. The "Alt" key-press event is still captured by the Unity global menu.

To reproduce this issue:
1. Open a new gnome-terminal running Bash or Emacs.
2. Right-mouse-click the terminal window and un-check the menu option "Show Menubar"
3. Type a few words separated by spaces.
4. Press Ctrl-A to position the cursor at the beginning of the line.
5. Press Alt-F to move the cursor forward one word -- THIS FAILS. Instead the File menu pops-up.

Work-around:
You must instead press "Esc" and then "F" to generate the Escape-F ASCII code. This makes using the terminal very difficult.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-terminal 3.0.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
Uname: Linux 3.0.0-12-generic-pae i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Fri Oct 21 12:04:31 2011
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (6 days ago)