Problematic tests list (5 rows):

bugs.gh_8263_test | gbak on Classic with ParallelWorkers > 1 doesn't restore indices, giving a cryptic error message
bugs.gh_8265_test | Nested IN/EXISTS subqueries should not be converted into semi-joins if the outer context is a sub-query which wasn't unnested
bugs.gh_8278_test | Avoid index lookup for a NULL key if the condition is known to always be FALSE in this case
bugs.gh_8290_test | "Unique scan" is incorrectly reported in the explained plan for unique index and IS NULL predicate
bugs.gh_8291_test | NULLs should be skipped during index navigation when there's no lower bound and matched conditions are known to ignore NULLs

This list is the same for:

6.0.0.1900 2026.04.14 9c08e532 | SS