Sure, I downloaded the ALL IN ONE bundle for Mac OS X and installed as usual. After installation I went to the Configuration Center and downloaded the latest updates. Restarted, and then I started to work with my previous workspaces. And yes, if I work in another workspace, the problem is still there. However, I found out that if a switch to a different application (Using Cmd – Tab) and then I go back to MyEclipse, the main menu gets restored.