Problematic tests list (11 rows):
bugs.core_2484_test  Success message when connecting to tiny trash database file
bugs.core_3323_test  Ability to cancel waiting in lock manager
bugs.core_5236_test  IN/ANY/ALL predicates may cause sub-optimal (late filtering) execution of joins
bugs.core_5637_test  string right truncation on restore of security db
bugs.core_6248_test  A number of errors when database name is longer than 255 symbols
bugs.gh_7141_test  Services manager breaks long lines into 1023 bytes portions when using isc_info_svc_line in Service::query()
bugs.gh_7466_plans_tracking_test  Add COMPILE trace events - ability to see execution plan of every PSQL statement.
bugs.gh_7611_test  Can't backup/restore database from v3 to v4 with SEC$USER_NAME field longer than 10 characters.
bugs.gh_8223_test  SubQueryConversion = true: error "no current record for fetch operation" with complex joins
functional.services.test_user_management  Check ability to make connect to FB services and add/drop user
functional.tabloid.test_3b372197  built-in functions UNICODE_CHAR and UNICODE_VAL

This list is the same for:
6.0.0.791 2025.05.27 02db84c2  CS