Hot corner functionality disappears seemingly at random

[Mario Vukelic]

I set up hot corners to activate the workspace switcher in the top-right corner, and window spread at bottom-right corner. This functionality frequently disappears after rebooting, and the corners become "cold" again. Sometimes I can get hot corners back by choosing the option in unity-tweak-tool again, but sometimes this does not help - though it appears that sometimes it comes back on its own. Ubuntu-Tweak had the same problem: http://askubuntu.com/questions/136445/ubuntu-tweak-tweaks-get-ignored-after-reboots

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity-tweak-tool 0.0.2-0~93~quantal1
ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4
Uname: Linux 3.8.0-1-generic x86_64
NonfreeKernelModules: wl nvidia
ApportVersion: 2.8-0ubuntu2
Architecture: amd64
CrashDB: {"impl": "launchpad", "project": "unity-tweak-tool"}
Date: Wed Jan 23 03:11:55 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-09-15 (129 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: unity-tweak-tool
UpgradeStatus: Upgraded to raring on 2013-01-14 (8 days ago)

[Angel Araya (arayaq)]

This is a Compiz bug (https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/858845), no there's no much we can do about it. There's a workaround but only works until a system update so the problem persist.

[George Karavasilev (kokoto-java)]

Yeah, like Angel said - this is a Compiz bug, hence now I marked it as Compiz and marked is a dublicate to LP:858845