The new RC 18.104.22.1687beta doesn't show the content of the "Project Tree" when checking "Regions". When the checkbox is not checked, the content is displayed.
Interesting, I see the same behavior here. We will fix it.
This issue was fixed in latest version 22.214.171.1249. You can download this version here http://support.orm-designer.com/31/download-orm-designer2-here
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