ANNOUNCEMENT: community.oracle.com is currently Read only due to planned upgrade until 28-Sep-2020 9:30 AM Pacific Time. Any changes made during Read only mode will be lost and will need to be re-entered when the application is back read/write.
1) Open a table which is referenced from some package body
2) Go to "Dependencies" tab
3) Find that package body, right click and select "Go to <PACKAGE_NAME>"
4) Literally nothing happens - dependency tab is refreshed, that's it. No errors thrown in the log, no new statements at statement log except dba_dependencies query.
Going to functions, procedures, views, triggers and package specs that way works as intended.
Also, important: if the package spec or body is open, or was opened in current session, then "Go to package body" also works. I have no idea how that connects, but I've experimented a bit and that seems consistent - if you open the package manually, you can later open it via go to.