Problematic tests list (13 rows):
bugs.core_0733_test  Compress Data over the Network
bugs.core_1263_test  GSec incorrectly processes some switches
bugs.core_2264_test  ALTER DOMAIN with dependencies may leave a transaction handle in inconsistent state causing segmentation faults
bugs.core_5501_test  Unclear gstat's diagnostic when damaged page in DB file appears encrypted
bugs.gh_8263_test  gbak on Classic with ParallelWorkers > 1 doesn't restore indices, giving a cryptic error message
bugs.gh_8386_test  Crash when creating index on table that uses UDR and ParallelWorkers > 1
bugs.gh_8821_test  REGRESSION: natural plan instead of primary/unique index
bugs.gh_8881_test  Large amount of unnecessary privileges in RDB$USER_PRIVILEGES for SYSDBA
bugs.gh_8926_test  Indexes may not be used for multiple ORed conditions containing both field and non-field references
bugs.gh_8948_test  Natural scan may occur for a query that has EXISTS and several joins in the inner subquery.
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

This list is the same for:
5.0.4.1773 2026.03.04 c4c81ed8  CS