Jakub I haven't experienced that myself. I'm still running it on my laptop and desktop computers, both running the most current version of Win10 Enterprise. As of the upgrade yesterday that is build 1803. I would start by resetting the stored settings by deleting the settings.xml file located at "C:\Users\<user>\AppData\Roaming\Workspace Utilities"
I can confirm that bug, as well as the reserved areas not being freed correctly on Windows 10. Honestly I don't use that feature any longer myself so it's low on my priority list. If I get some free time I'll look into it though. I figure it has to be some changes that came about to the APIs in use with Windows 10.
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