Problematic tests list (14 rows):
bugs.core_1715_test  Incorrect "key size exceeds implementation restriction for index" error
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_6071_test  Restore of encrypted backup of database with SQL dialect 1 fails
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_6802_test  When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
bugs.gh_6860_test  Create user statement fails with SQLSTATE = HY000 when using DataTypeCompatibility
functional.trigger.database.test_disconnect_05  ON DISCONNECT trigger and OnDisconnectTriggerTimeout expiration

This list is the same for:
5.0.5.1871 2026.07.21 7cbe5d41  CS
5.0.5.1871 2026.07.21 7cbe5d41  SS