diff --git a/tests/bugs/gh_7731_test.py b/tests/bugs/gh_7731_test.py
new file mode 100644
index 00000000..3eaf5473
--- /dev/null
+++ b/tests/bugs/gh_7731_test.py
@@ -0,0 +1,39 @@
+#coding:utf-8
+
+"""
+ID:          issue-7731
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/7731
+TITLE:       Display length of timestamp with timezone is wrong in dialect 1
+DESCRIPTION:
+NOTES:
+    [30.08.2023] pzotov
+    Confirmed problem on 5.0.0.1169
+    Checked on 5.0.0.1177 (intermediate snapshots).
+"""
+
+import locale
+
+import pytest
+from firebird.qa import *
+
+db = db_factory(sql_dialect = 1)
+
+test_script = f"""
+    set heading off;
+    SET BIND OF TIMESTAMP with time zone TO varchar;
+    select timestamp '2023-08-29 21:22:23.0123 America/Argentina/ComodRivadavia' from rdb$database;
+    select mon$sql_dialect from mon$database;
+"""
+
+act = isql_act('db', test_script)
+
+expected_stdout = """
+    29-AUG-2023 21:22:23.0123 America/Argentina/ComodRivadavia
+    1
+"""
+
+@pytest.mark.version('>=5.0')
+def test_1(act: Action):
+    act.expected_stdout = expected_stdout
+    act.execute(combine_output = True)
+    assert act.clean_stdout == act.clean_expected_stdout