I'm using Beta 6. Immediately after opening a package with right click in the object browser and then click on View spec and body, the package body window is displayed, but the program unit navigation does not work, and the Find window does not work. I have to click on another window (e.g. the package spec), and then click back on the package body window, and then program navigation and Find work fine.

It seems that the focus is not on the editor after opening the Program Window. We'll fix it!