Problematic tests list (19 rows):
bugs.core_1291_test  Can't transliterate character set when look at procedure text in database just created from script
bugs.core_4067_test  Problem with "CREATE DATABASE ... COLLATION ..." and 1 dialect
bugs.core_4218_test  Add database owner to mon$database
bugs.core_4933_test  Add better transaction control to isql
bugs.core_5273_test  Attempt to create database with running trace leads to consistency check (cannot find tip page (165), file: tra.cpp line: 2233)
bugs.core_5495_test  New users or changed passwords in legacy authentication do not work in Firebird 4
bugs.core_5630_test  Can't create the shadow file
bugs.core_6469_test  Provide ability to see in the trace log actions related to session management (e.g. ALTER SESSION RESET)
bugs.core_6517_test  Regression: CREATE DATABASE fails with 'Token unknown' error when DB name is enclosed in double quotes and 'DEFAULT CHARACTER SET' is specified after DB name
bugs.gh_6802_test  When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
bugs.gh_7436_test  Backup error for wide table
bugs.gh_8104_test  Inefficient evaluation of expressions like rdb$db_key <= ? after mass delete
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.database.create.test_01  Create database: set names and default character set
functional.database.create.test_08  Create database: Multi file DB
functional.database.create.test_09  Create database: Multi file DB
functional.database.create.test_10  Create database: Multi file DB - starting

This list is the same for:
4.0.5.3091 2024.04.29 bd0aac11  CS
4.0.5.3091 2024.04.29 bd0aac11  SS