I'm having a problem viewing other owners' objects, even though I'm logged in as a user with DBA permissions

PL/SQL does not display the view/edit spec & body option

For testing purposes, I created a new user with the DBA permission, and this user was able to view the object without any problems

What could be causing this conflict?
DBA_SYS_PRIVS:
DBA_ROLE_PRIVS:


dba_objects,dba_sys_privs, etc.... then you most definitely have the privs needed to get everything needed from the dictionary, including package body (fromdba_source) without restriction on owner. So this means it's probably a tool (PL/SQL Developer) issue rather than a privs issue on the database. For example, it might be queryinguser_*orall_*views rather thandba_*views. See if you can configure it to use thedba_*views.