Problematic tests list (4 rows):

bugs.core_5685_test | Sometime it is impossible to cancel/kill connection executing external query
bugs.gh_6802_test | When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
functional.syspriv.test_access_shutdown_database | Check ability to access to database in shutdown single mode as non-sysdba
functional.tabloid.test_db_owner_punct_chars_max_length | Allow to create DB with owner containing a character from string.punctuation set, with duplicating it up to max allowed length

This list is the same for:

5.0.4.1748 2026.01.13 d6766298 | SS