window is not hidden correctly when dragged to the edge of the screen and indicator is not drawn

[Jean-Baptiste Lallement]

Binary package hint: unity

This started with unity 3.8.4-0ubuntu1

TEST CASE:
1. Launch an application e.g gedit
2. Grab the title bar and drag the window to the top or a side of the screen
3. Move the pointer

Result:
The window is not hidden and it is erased when the user moves the window
The grid indicator is not drawn

There is a video attached which is better than any explanation for this bug.

Graphics Card: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.8.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,imgpng,regex,resize,mousepoll,vpswitch,grid,unitymtgrabhandles,move,resizeinfo,place,snap,animation,session,wall,expo,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
Date: Fri Apr 8 21:55:19 2011
EcryptfsInUse: Yes
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to natty on 2011-02-21 (45 days ago)