I thought DBA_OBJECTS include all objects in CDB and all PDBs?

I'm running this query from the CDB and I get nothing. But when I run from PDB I get result

I thought it should show up in the CDB!! but nope!

Am I missing something in my logic?

proof, using dummy data (Oracle 12c - I don't use it anymore - perhaps bugged?)

Running from PDB, I get no rows selected

Running same query from PDB gives me result