Problematic tests list (4 rows):
bugs.gh_7141_test  Services manager breaks long lines into 1023 bytes portions when using isc_info_svc_line in Service::query()
bugs.gh_8085_test  Memory leak when executing a lot of different queries and StatementTimeout > 0
functional.intl.test_non_ascii_firebird_and_trace_utf8  Check ability to obtain non-ascii content from firebird.log and trace when use ON DISCONNECT trigger and exception with non-ascii names, charset = UTF8.
functional.session.test_ext_conn_pool_01  External Connections Pool, functionality test 01

This list is the same for:
4.0.6.3185 2025.02.16 9cac45ac  CS