Problematic tests list (56 rows):
bugs.core_0972_test  Case insensitive collation for UTF-8
bugs.core_1760_test  Support hex numeric and string literals
bugs.core_2581_test  Infinity should not escape from the engine
bugs.core_4409_test  Enhancement in precision of calculations with NUMERIC/DECIMAL
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_5696_test  Conversion from zero numeric literals to DECFLOAT results in incorrect value
bugs.core_5697_test  Conversion from zero numeric literals to DECFLOAT results in incorrect value
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_6219_test  Add support for special (inf/nan) values when sorting DECFLOAT values
bugs.core_6444_test  Ability to query Firebird configuration using SQL
bugs.gh_0310_test  System table with keywords
bugs.gh_6282_test  Add DPB properties for time zone bind and decfloat configuration [CORE6032]
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_6809_test  Integer hex-literals: support for INT128
bugs.gh_7050_test  Add table MON$COMPILED_STATEMENTS and columns
bugs.gh_7257_misc_datatypes_test  Support for partial indices
bugs.gh_7257_test  Support for partial indices
bugs.gh_7304_test  Events in system attachments (like garbage collector) are not traced
bugs.gh_7398_test  Worst plan sort created to execute an indexed tables
bugs.gh_7466_plans_tracking_test  Add COMPILE trace events - ability to see execution plan of every PSQL statement.
bugs.gh_7466_test  Add COMPILE trace events for procedures/functions/triggers
bugs.gh_7804_test  The partial index is not involved when filtering conditions through OR.
bugs.gh_7904_test  More realistic cardinality adjustments for unmatchable booleans // FB5 bad plan for query
bugs.gh_8077_test  Error "Too many recursion levels" does not stop execuition of code that uses ON DISCONNECT trigger (FB 4.x+)
bugs.gh_8161_test  Cardinality estimation should use primary record versions only
bugs.gh_8219_test  Database creation in 3.0.12, 4.0.5 and 5.0.1 slower than in previous releases
bugs.gh_8278_test  Avoid index lookup for a NULL key if the condition is known to always be FALSE in this case
bugs.gh_8290_test  "Unique scan" is incorrectly reported in the explained plan for unique index and IS NULL predicate
bugs.gh_8434_test  Fix implicitly used collations after ALTER DOMAIN
bugs.gh_8663_test  Problem with restore time when DB has many indices (possible regression in 6.x)
bugs.gh_8851_test  'Internal error' when calling outer procedure after deleting unused result variable from inner procedure
functional.arno.optimizer.test_opt_inner_join_05  INNER JOIN join order LIKE and STARTING WITH
functional.ctas.test_datatypes_usage_04  CTAS. NUMERICAL TYPES. Check content of RDB$ tables for a CTAS-table when fields are expressions, literals or aggregates.
functional.datatypes.test_decfloat_exceptions_trapping  Test exception trapping for result of DECFLOAT operations
functional.datatypes.test_decfloat_nan_and_infinity_comparison  DECFLOAT should not throw exceptions when +/-NaN, +/-sNaN and +/-Infinity is used in comparisons
functional.datatypes.test_decfloat_ordering_rules  Test ordering of decfloat values
functional.domain.create.test_all_datatypes_basic  CREATE DOMAIN - basic checks
functional.dtt.test_dtt_indices_01  Index support for Declared LTT - basic test.
functional.dtt.test_dtt_max_count  DECLARED TEMPORARY TABLE - check max limit for DTT that can be created within each kind of PSQL unit.
functional.gtcs.test_cast_datatypes  Check result or CAST() for misc agruments // from GTCS.
functional.ltt.test_ltt_savepoints_2  LTT. Regression with SAVEPOINTS.
functional.package.constants_backup_restore_test  Package constants (#8916) - test for backup/restore.
functional.package.constants_basic_test  Package constants (#8916) - basic test.
functional.package.temp_tables_basic_test  Temporary Tables in Packages (#8974) - basic test.
functional.session.test_alter_session_reset_decfloat  ALTER SESSION RESET: DECFLOAT parameters must be returned to default values
functional.sqlite.test_b383b90278  Assertion in UPDATE statement for textual column which has check constraint that involves numeric comparison
functional.table.alter.test_05  ALTER TABLE - ALTER - TO
functional.table.external.external_file_all_datatypes_test  External tables must accept values of all existing FB datatypes if they belong to allowed range (or set), and must reject out-of-range values
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:
6.0.0.2191 2026.09.30 717c2a22  SS
6.0.0.2195 2026.10.01 a56b0813  SS
6.0.0.2196 2026.10.01 56d656be  SS
6.0.0.2196 2026.10.03 eb124641  SS
6.0.0.2197 2026.10.03 e1e14ac5  SS
6.0.0.2197 2026.10.05 1e316df7  SS