488176 - Dock window to side of screen on Windows 7 using Aero Snap window arranging feature. Minimize and restore from taskbar, Firefox is no longer snapped to side.

Status: RESOLVED DUPLICATE of bug 489258

(Firefox :: General, defect)

Description

[Dave Matthews]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8

On Windows 7, there is a new window arranging feature called Aero Snap that allows users to snap a window to the edge of the screen.  The bug is that Firefox windows become un-snapped if you minimize and restore them.



Reproducible: Always

Steps to Reproduce:

1. On Windows 7, drag a Firefox window to the side of the screen (all the way until the cursor touches the edge) and release.  This will snap the Firefox window so it fills half the screen.

2. Minimize the Firefox window by clicking the minimize button in titlebar.

3. Restore the Firefox window by clicking the taskbar button.



Actual Results:  
bug: Firefox will restore, but is no longer snapped to the edge of the screen.  

Expected Results:  
The standard behavior is for the window to restore into the snapped position.  (for ex, try the same repro steps with notepad)

Speculation: This issue may be caused if Firefox is calling getwindowpos or getwindowplacement and caching that information to decide where to restore the window.  This could interfere with the Aero Snap feature.