Problematic tests list (15 rows):
bugs.core_0733_test  Compress Data over the Network
bugs.core_1263_test  GSec incorrectly processes some switches
bugs.core_1271_test  Ceation of invalid procedures/triggers allowed
bugs.core_1725_test  Unable to restore a database with inactive indices if any SP/trigger contains an explicit plan
bugs.core_4371_test  Create function/sp which references to non-existent exception: error message is "Error while parsing function's BLR" instead of "exception not defined"
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_8891_test  Regression. Result of cross join of two procedures + unioned with common datasource (e.g. rdb$database) is wrong
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.replication.test_make_async_reinit_reliable  Make asynchronous replica re-initialization reliable #8324
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:
5.0.4.1748 2026.02.12 8e4489a2  CS