We've seen some reports of the launcher being stuck minimized in the taskbar. We're currently looking into a fix for this, but here's a workaround for now (thanks, uglyjimmy!):
1. Start Neverwinter
2. Start Task manager
3. Applications tab
4. Right click on Neverwinter and press Minimize
5. Right click again and press Maximize
(Now launcher is there but Maximized over everything)
6. Escape to close launcher
7. Start Neverwinter and there is your launcher again, visible and in normal size.