Unity restores windows to random workspaces on system resume

When I suspend and resume my latop, my windows, which were originally all in one workspace, are restored to different workspaces (apparently at random).

For windows not in the current workspace after resume, the unity launcher indicates that they are running, but clicking on them has no effect (it doesn't bring the window to the foreground). These windows also do not appear in the task switcher so you can't switch to them.

If I have workspaces enabled, this is annoying but can be manually corrected by showing all workspaces and dragging the windows to the current workspace.

If I have workspaces disabled, the windows on the disabled workspaces cannot be accessed at all.

I would expect the windows to be restored to the same workspace they were in before suspend (especially if workspaces are disabled), and even if this were not the case, clicking on their icon in the launcher should display them as normal.

IIRC this is an issue in Ubuntu 14.04 as well as in Ubuntu 14.10.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: unity 7.3.1+14.10.20141016-0ubuntu1
Uname: Linux 3.18.0-031800rc6-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Sat Nov 29 10:35:31 2014
InstallationDate: Installed on 2014-11-26 (2 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
 LANGUAGE=en_AU:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)