I think I have found confirmation myself:
Known Issues: While Opening the Pluggable Database (PDB) (Doc ID 2292143.1)
1. PDB opened in restricted mode after PSU Patching.
Applying the October 2016 PSU to the 126.96.36.199 Container Database with PDBs in UPGRADE mode results in PDBs getting stuck in restricted mode.
Solution: Drop and recreate registry$sqlpatch of CDB and all PDBs with violation
a) Take backup of CDB registry$sqlpatch, Drop the registry$sqlpatch and rerun the script to create the table
b)Go to the PDBs, repeat the same