Problematic tests list (32 rows):

bugs.core_2284_test | Records left in RDB$PAGES after rollback of CREATE TABLE statement
bugs.core_4754_test | Bugcheck 167 (invalid SEND request) while working with GTT from several attachments (using EXECUTE STATEMENT ... ON EXTERNAL and different roles)
bugs.core_5275_test | Expression index may become inconsistent if CREATE INDEX was interrupted after b-tree creation but before commiting
bugs.core_5481_test | Available indices are not used in some cases if ORDER BY expression is a filtered one
bugs.core_5488_session_idle_test | Timeouts for running SQL statements and idle connections
bugs.core_5501_test | Unclear gstat's diagnostic when damaged page in DB file appears encrypted
bugs.core_5618_test | Part of the pages of the second level blobs is not released when deleting relations
bugs.core_5737_test | Invalid parameters of gds transaction in ISQL
bugs.core_5921_test | Provide information about Global Commit Number, Commit Number of currently used database snapshot (if any) and Commit Numbers assigned to the committed transactions
bugs.core_6095_test | Extend trace record for COMMIT/ROLLBACK RETAINING to allow chaining of transaction ids
bugs.core_6166_test | Problems with long object names (> 255 bytes)
bugs.gh_0310_test | System table with keywords
bugs.gh_6802_test | When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
bugs.gh_7050_test | Add table MON$COMPILED_STATEMENTS and columns
bugs.gh_7269_test | Database restore must make every effort on activating deferred indexes
bugs.gh_7304_test | Events in system attachments (like garbage collector) are not traced
bugs.gh_7398_test | Worst plan sort created to execute an indexed tables
bugs.gh_7466_plans_tracking_test | Add COMPILE trace events - ability to see execution plan of every PSQL statement.
bugs.gh_7466_test | Add COMPILE trace events for procedures/functions/triggers
bugs.gh_7804_test | The partial index is not involved when filtering conditions through OR.
bugs.gh_7904_test | More realistic cardinality adjustments for unmatchable booleans // FB5 bad plan for query
bugs.gh_8077_test | Error "Too many recursion levels" does not stop execuition of code that uses ON DISCONNECT trigger (FB 4.x+)
bugs.gh_8161_test | Cardinality estimation should use primary record versions only
bugs.gh_8219_test | Database creation in 3.0.12, 4.0.5 and 5.0.1 slower than in previous releases
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_8663_test | Problem with restore time when DB has many indices (possible regression in 6.x)
bugs.gh_8851_test | 'Internal error' when calling outer procedure after deleting unused result variable from inner procedure
functional.arno.optimizer.test_opt_inner_join_05 | INNER JOIN join order LIKE and STARTING WITH
functional.index.create.test_all_cases_basic | CREATE INDEX: check all cases
functional.table.alter.test_05 | ALTER TABLE - ALTER - TO
functional.trigger.alter.test_alter_dml_basic | ALTER TRIGGER - basic checks for DML triggers
functional.trigger.database.test_transactioncommit_01 | Trigger on commit transaction. See also CORE-645

This list is the same for:

6.0.0.2153 2026.08.18 f599d83a | SS