Previewing an entry shows nothing

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 6.0.X EE
• Fix Version/s: 6.0.X EE
• Component/s: Content Display Widgets > Web Content Display widget, ~[Archived] WCM > Publication
• Labels: None

1. Login as admin
2. Press Manage Entries
3. Press add entry
4. fill the title, content,... fields
5. click on preview

Another page opens but no content or title to preview.