Executing long running package locks SQL Navigator until it completes (64581)

When I run a command "exec package_body.package_name" in the editor, the window becomes gray and locks up SQL Navigator until it is complete.  I am not able to do anything else in SQL Navigator until the command is done running.   If the package takes over a minute or so, I will see a (NOT RESPONDING) message at the top. If I am running a straight query, sometimes things will lock up the same way and sometimes it does not.

WORKAROUND:
None

STATUS:
Waiting for fix to be released in a future version of SQL Navigator.