Problematic tests list (6 rows):

bugs.gh_7436_test | Backup error for wide table
bugs.gh_7818_test | Extend rdb$get_context('SYSTEM', '***') with client-related info
bugs.gh_8104_test | Inefficient evaluation of expressions like rdb$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

This list is the same for:

4.0.5.3091 2024.04.29 bd0aac11 | CS
4.0.5.3091 2024.04.29 bd0aac11 | SS