Problematic tests list (15 rows):
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
functional.tabloid.core_3611_aux_test  Wrong data while retrieving from CTEs (or derived tables) with same column names
functional.tabloid.test_3123a5a0  Check ability to reuse internal connection by EXECUTE STATEMENT.
functional.tabloid.test_333be4bf  Change error by warning in the case when isc_dpb_parallel_workers value is not at valid range
functional.tabloid.test_3b372197  built-in functions UNICODE_CHAR and UNICODE_VAL
functional.tabloid.test_657d86fe  RemoteAuxPort is per-database
functional.tabloid.test_6cfc9b5d  Scrollable cursors. Automated test with randomly generated mission for positioning.
functional.tabloid.test_7641d759  Fix modulo crash on MIN % -1
functional.tabloid.test_80fd0682  Fixed bug with index names patterns in online validation service
functional.tabloid.test_8816d5c8  Fixed crash when IN predicate is delivered into aggregates/unions
functional.tabloid.test_90129c6d  Scrollable cursors. Fixed isBof/isEof when the prefetch is active
functional.tabloid.test_aae2ae32  Better fix for #8252: incorrect subquery unnesting with complex dependencies, it re-allows converting nested IN/EXISTS into multiple semi-join
functional.tabloid.test_arithmetic_cast_float_to_int_as_round  Result of CAST for numbers is implementation defined
functional.tabloid.test_arithmetic_numexpr_eval_dialect_1  Check result of integer division on dialect 1.
functional.tabloid.test_arithmetic_numexpr_eval_dialect_3  Check result of integer division on dialect 3.

This list is the same for:
5.0.5.1893 2026.09.25 e5e4d331  SS