Window rolls up after launch

[Gavin Panella]

After launching Emacs (via emacs, from the command line), the window appears as normal, the usual size (not maximized). It then, over the course of about a second, to slowly roll up, like a window blind, until there's only one line visible. I have attached a screen shot of its resting position.

Dragging the corners makes the window bigger, but then it rolls up again when released. Width can be set, and that is not affected.

If I use Ctrl-Alt-Numpad6 (for example) to pin the window's position to the right side of the screen, it does not roll up. Likewise, maximizing the window also prevents it from rolling up.

Restoring the window to a non-maximized state causes it revert to the rolling behaviour.

Dragging the window from a position-pinned state so that it restores to a non-pinned and non-maximized state seems to stop the rolling behaviour completely; the window can then be resized normally.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: emacs 23.3+1-1ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic 3.2.5
Uname: Linux 3.2.0-15-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Wed Feb 15 13:30:33 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=bash
SourcePackage: emacs23
UpgradeStatus: Upgraded to precise on 2012-01-16 (30 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Haitao Li (lht)]

I see the same with the bzr trunk of Emacs. A minimum .emacs file to reproduce the fault is:

  > (tool-bar-mode -1)
  > (menu-bar-mode -1)

And I don't see this fault with Gnome.

A work around works for me under Unity, is removing the `(menu-bar-mode -1)` line in my .emacs file.