Problematic tests list (21 rows):
bugs.core_0733_test  Compress Data over the Network
bugs.core_1263_test  GSec incorrectly processes some switches
bugs.core_2197_test  Add support for -nodbtriggers switch in gbak into services API
bugs.core_2264_test  ALTER DOMAIN with dependencies may leave a transaction handle in inconsistent state causing segmentation faults
bugs.core_3450_test  Inefficient optimization (regression)
bugs.core_4473_test  Restore of pre ODS 11.1 database can leave RDB$RELATION_TYPE null
bugs.core_5089_test  Metadata extration (ISQL -X): "CREATE PROCEDURE/FUNCTION" statement contains reference to column of table(s) that not yet exists if this procedure had parameter of such type when it was created
bugs.core_5107_test  set autoddl off and sequence of: ( create view V as select * from T; alter view V as select 1 x from rdb$database; drop view V; ) leads to server crash
bugs.core_5501_test  Unclear gstat's diagnostic when damaged page in DB file appears encrypted
bugs.gh_3812_test  Query with SP doesn't accept explicit plan [CORE3451]
bugs.gh_7304_test  Events in system attachments (like garbage collector) are not traced
bugs.gh_8061_test  Unnest IN/ANY/EXISTS subqueries and optimize them using semi-join algorithm
bugs.gh_8386_test  Crash when creating index on table that uses UDR and ParallelWorkers > 1
functional.arno.optimizer.test_opt_sort_by_index_10  ORDER BY ASC using index (multi)
functional.arno.optimizer.test_opt_sort_by_index_13  ORDER BY ASC using index (multi)
functional.arno.optimizer.test_opt_sort_by_index_19  ORDER BY ASC using index (multi) and WHERE clause
functional.basic.isql.test_02  ISQL - SHOW SYSTEM TABLES
functional.basic.isql.test_06  Let ISQL show per-table run-time statistics.
functional.replication.test_make_async_reinit_reliable  Make asynchronous replica re-initialization reliable #8324
functional.replication.test_missed_privilege_for_object_belonging_to_non_dba  Replication stops if GRANT issued by NON-DBA user who has RDB$ADMIN role and appropriate object (table, etc) belongs to another user
functional.tabloid.test_333be4bf  Change error by warning in the case when isc_dpb_parallel_workers value is not at valid range

This list is the same for:
5.0.4.1796 2026.04.02 2bd2ed09  SS