Does it happen consistently after waking from sleep? If not, can you try to pin it down further? Any error/crash messages concerning MouseEvents? Anything in the Windows Event Viewer?
Desktop Manager and Desktop Preview can be selected in the main Dexpot menu. Their configuration is at "Settings > Components". The taskbar ones are plugins: Settings > Plugins and Extras, Taskbar Pager and SevenDex.
I have. The problem is simply that Unreal Editor responds very slowly to requests like hiding/showing its windows. There is currently no way to fix it.
Try assigning "soffice.bin" (located in "C:\Program Files (x86)\OpenOffice 4\program" for me). It's the same for all the components of the office suite, so you can't assign e.g. Writer and Calc to different desktops.
:dex: Yes, assignments based on shortcuts don't work if the application has some kind of launcher that's separate from the application itself. I think this is the case with OpenOffice, not sure about Word. To clear out assignments, select anything in Assign Assignments with a desktop assigned and cl...