Problematic tests list (10 rows):

bugs.core_1746_test | Expression index can be created while doing inserts into table
bugs.core_1894_test | Circular dependencies between computed fields crash the engine
bugs.core_2140_test | Error messages after parameters substitution contains '\n' characters instead of line break
bugs.core_3450_test | Inefficient optimization (regression)
bugs.core_3610_test | Can insert DUPLICATE keys in UNIQUE index
bugs.core_3672_test | computed index by SUBSTRING function for long columns
bugs.core_3691_test | Missing constraint name in foreign key error message in FB 2.1.4
bugs.core_4386_test | Report more details for "object in use" errors
bugs.core_4754_test | Bugcheck 167 (invalid SEND request) while working with GTT from several attachments (using EXECUTE STATEMENT ... ON EXTERNAL and different roles)
bugs.core_4819_test | EXECUTE PROCEDURE's RETURNING_VALUES and EXECUTE STATEMENT's INTO does not check validity of assignments targets leading to bugcheck

This list is the same for:

6.0.0.1858 2026.03.25 07b6dd60 | SS
6.0.0.1864 2026.03.26 7f3cf6af | SS