Problematic tests list (5 rows):
bugs.gh_0310_test  System table with keywords
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_8061_test  Unnest IN/ANY/EXISTS subqueries and optimize them using semi-join algorithm
functional.blob.test_open_blob_without_select  Open BLOB without selection
functional.metacache.core_4386_metacache_test  Error 'object in use' must NOT raise in 6.x with shared metacache (opposite outcome to prior versions).

This list is the same for:
5.0.5.1816 2026.04.21 4ff41c4c  CS
5.0.5.1816 2026.04.21 4ff41c4c  SS