Two things I’ve noticed:
See the attached screenshot. I have one SQLNav open, yet two blocks appear in the taskbar, one with the SQLNav icon labeled “SQL Navigator for Oracle”, the other with a Windows folder icon that is labeled “SQL Navigator 6.0 - Xpert Edition - Beta Release - [Unified Editor - New query”. The one SQLNav was open for a while when suddenly the second block appeared in the taskbar after saving changes to a package in the Editor.
In Formatter options, I have indention set for 4 spaces, but the Formatter is only indenting 3 spaces.
Also, I agree with an earlier post, “Save changes to DB” in the Editor should be Ctrl+S, not changed to Ctrl+Alt+S.