Problematic tests list (28 rows):
bugs.core_1292_test  Can't create table using long username and UTF8 as attachment charset
bugs.core_1642_test  Non-privileged monitoring reports wrong attachment data
bugs.core_1869_test  Roles granting/revoking logic
bugs.core_2004_test  ALTER USER XXX INACTIVE
bugs.core_2233_test  Allow non-SYSDBA users to monitor not only their current attachment but other their attachments as well
bugs.core_2879_test  Sweep could raise error : page 0 is of wrong type (expected 6, found 1)
bugs.core_2929_test  "Invalid ESCAPE sequence" when connecting to the database
bugs.core_2940_test  Trace output could contain garbage data left from filtered out statements
bugs.core_2988_test  Concurrent transaction number not reported if lock timeout occurs
bugs.core_3008_test  Add attachment's CHARACTER SET name into corresponding trace records
bugs.core_3365_test  Extend syntax for ALTER USER CURRENT_USER
bugs.core_3735_test  Unprivileged user can delete from RDB$DATABASE, RDB$COLLATIONS, RDB$CHARACTER_SETS
bugs.core_3736_test  WITH LOCK clause is allowed for users with read-only rights on some table, thus blocking others from updating this table
bugs.core_4200_test  An uncommitted select of the pseudo table sec$users blocks new database connections
bugs.core_4236_test  Database shutdown is reported as successfully completed before all active connections are in fact interrupted
bugs.core_4326_test  Keyword SET should not be required in ALTER USER statement
bugs.core_4337_test  gfix -sweep makes "reconnect" when it is removed from mon$attachments by delete command (issued in another window)
bugs.core_4451_test  Allow output to trace explain plan form.
bugs.core_4731_test  Prohibit an ability to issue DML or DDL statements on RDB$ tables
bugs.core_4802_test  Regression: GRANT UPDATE(<some_column>) on <T> acts like grant update on ALL columns of <T>
bugs.core_4811_test  Make user names behave according to SQL identifiers rules
bugs.core_4821_test  grant create database to ROLE doesn`t work: "no permission for CREATE access to DATABASE ..." [CORE4821]
bugs.core_5435_test  Badly selective index could be used for extra filtering even if selective index is used for sorting
bugs.core_5489_test  Bad performance for NULLs filtering inside a navigational index scan
bugs.core_5602_test  Slow changes on domain
bugs.core_5995_test  Creator user name is empty in user trace sessions
bugs.core_6095_test  Extend trace record for COMMIT/ROLLBACK RETAINING to allow chaining of transaction ids
bugs.core_6108_test  Regression: FB3 throws "Datatypes are not comparable in expression" in procedure parameters

This list is the same for:
3.0.12.33744 2024.05.09 9cf377f6  CS