Problematic tests list (9 rows):
bugs.core_2264_test  ALTER DOMAIN with dependencies may leave a transaction handle in inconsistent state causing segmentation faults
bugs.core_2475_test  External table data not visible to other sessions in Classic
bugs.core_2796_test  DB_KEY is always zero for external tables
bugs.core_4882_test  ISQL input command (or -i option) reads large (> 64K) lines incorrectly
bugs.gh_4314_test  Sub-optimal predicate checking while selecting from a view [CORE3981]
bugs.gh_6802_test  When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
functional.table.external.external_file_access_allowed_test  External table must be allowed in in the directory belonging to the list specified in the 'ExternalFileAccess' config parameter
functional.table.external.external_file_access_denied_test  External file path outside configured directories is rejected at DDL time
functional.table.external.external_file_all_datatypes_test  External tables must accept values of all existing FB datatypes if they belong to allowed range (or set), and must reject out-of-range values

This list is the same for:
4.0.8.3324 2026.09.25 d3f4f818  CS