Problematic tests list (14 rows):
bugs.core_1715_test  Incorrect "key size exceeds implementation restriction for index" error
bugs.core_2264_test  ALTER DOMAIN with dependencies may leave a transaction handle in inconsistent state causing segmentation faults
bugs.core_4067_test  Problem with "CREATE DATABASE ... COLLATION ..." and 1 dialect
bugs.core_4524_test  New gbak option to enable encryption during restore
bugs.core_4864_test  CREATE DATABASE fail with ISQL
bugs.core_5630_test  Can't create the shadow file
bugs.core_5790_test  User with DROP DATABASE privilege can't drop database
bugs.core_6208_test  CREATE DATABASE grant is lost in security.db after backup/restore cycle
bugs.core_6316_test  Unable to specify new 32k page size
bugs.core_6412_test  Firebird is freezing when trying to manage users via triggers
bugs.core_6441_test  Srp plugin keeps connection after database has been removed for ~10 seconds (SS and SC)
bugs.gh_4314_test  Sub-optimal predicate checking while selecting from a view [CORE3981]
bugs.gh_6860_test  Create user statement fails with SQLSTATE = HY000 when using DataTypeCompatibility
functional.replication.test_sync_replica_server_hangs_on_disconnect  Synchronous replication hangs on disconnect [CORE6497]

This list is the same for:
4.0.8.3314 2026.07.21 9fbbcf7b  CS
4.0.8.3314 2026.07.21 9fbbcf7b  SS