Problematic tests list (15 rows):
bugs.core_0733_test  Compress Data over the Network
bugs.core_5501_test  Unclear gstat's diagnostic when damaged page in DB file appears encrypted
bugs.gh_6413_test  Data pages of newly gbak restored databases should be marked as "swept"
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_8794_test  Called procedure parameter changes during execution without assignment when deleting from updatable view
bugs.gh_8799_test  BUGCHECK "decompression overran buffer (179)" when WITH LOCK clause is used
bugs.gh_8815_test  Restore the broken record layout optimization by gbak and extend it to the new datatypes
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_journal_file_truncated_on_concurrent_cs_load  File truncation errors may happen during replication in Windows CS
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:
5.0.4.1727 2025.11.22 3c507ba1  CS