Problematic tests list (9 rows):

bugs.core_0733_test | Compress Data over the Network
bugs.gh_7436_test | Backup error for wide table
bugs.gh_8488_test | MIN/MAX aggregates may badly affect the join order in queries with mixed INNER/LEFT joins
bugs.gh_8851_test | 'Internal error' when calling outer procedure after deleting unused result variable from inner procedure
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.replication.test_make_async_reinit_reliable | Make asynchronous replica re-initialization reliable #8324
functional.replication.test_sync_replica_server_hangs_on_disconnect | Synchronous replication hangs on disconnect [CORE6497]

This list is the same for:

4.0.7.3243 2025.12.11 14297e4a | CS
4.0.7.3243 2025.12.11 14297e4a | SS