gnome-terminal resizes to max height when mousing over gnome panel

[Jameson Williams]

What happens:
Observe in the attached images, states A and B. A is when I've resized the window to how I want it, and am using it. B is when I move the mouse over the gnome panel tray, and the application resizes without me telling it to.

What I expect to happen:
Why would the window resize? I didn't ask it to.

Ubuntu version:
This was noticed in Precise 12.04, amd64, on several installations.

Package versions:
gnome-terminal 3.4.1.1-0ubuntu1
gnome-panel 1:3.4.1-0ubuntu1

Other info:
This is in a gnome classic session:
gnome-session --session=gnome-classic

[Jameson Williams (jamesonwilliams)]

NOTE:

A build of the vanilla upstream project does NOT exhibit this behavior, so I do believe this is a Ubuntu bug, not eligible for triage.

In particular, the gnome-terminal binary that is arrived at through this sequence does NOT have the bug.

wget http://ftp.gnome.org/pub/gnome/sources/gnome-terminal/3.4/gnome-terminal-3.4.1.1.tar.xz
tar xJvf gnome-terminal-3.4.1.1.tar.xz
cd gnome-terminal-3.4.1.1/
sudo aptitude build-dep gnome-terminal
./configure
make
./src/gnome-terminal

[Jameson Williams (jamesonwilliams)]

Actually, Chromium started going this too, so it can't be a gnome-terminal bug. My new guess is gnome-panel?

[Jameson Williams (jamesonwilliams)]

However, with Chromium, the window does not resize -- it just moves down to align with the parent (desktop).

Mousing over the entry in the gnome panel triggers it for sure, but it does also sometimes just happen by itself.

[Launchpad Janitor (janitor)]

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

[Chris Billington (cjbil1)]

I'm experiencing this bug too.

The deciding factor as to which windows move and which don't, when I mouse-over the launchers on gnome-panel, appears to be whether that window has at any point in the past had an overlap outside of the screen struts, ie it has been anywhere that a newly created or maximised window could not be.

So if I drag a window halfway off the bottom of the screen, or a few pixels underneath a panel, even if I drag it back, it will then move around randomly whenever I mouse-over the launchers on gnome-panel.

It's kinda weird.

[Jameson Williams (jamesonwilliams)]

I believe this bug is ultimately an artifact of 974242:

https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/974242

After I disabled the Place Window plugin to Compiz, as suggested there, I have not seen this issue.