diff --git a/tests/test_session_handover_check.py b/tests/test_session_handover_check.py
index 8c4aedb..7c924c8 100644
--- a/tests/test_session_handover_check.py
+++ b/tests/test_session_handover_check.py
@@ -98,3 +98,31 @@ def test_non_ci_strict_enforces_date_branch_and_merge_gate(monkeypatch, tmp_path
     assert any("must contain today's UTC date" in e for e in errors)
     assert any("must target current branch" in e for e in errors)
     assert any("merged_to_feature_branch=no" in e for e in errors)
+
+
+def test_non_ci_strict_still_blocks_tbd_next_ticket(monkeypatch, tmp_path) -> None:
+    module = _load_module()
+    handover = tmp_path / "session-handover.md"
+    handover.write_text(
+        "\n".join(
+            [
+                "### 2000-01-01 | session=test",
+                "- branch: feature/other-branch",
+                "- docs_checked: docs/workflow.md, docs/commands.md, docs/agent-constraints.md",
+                "- open_issues_reviewed: #1",
+                "- next_ticket: #TBD",
+                "- process_gate_checked: process_ticket=#1 merged_to_feature_branch=yes",
+            ]
+        ),
+        encoding="utf-8",
+    )
+    monkeypatch.setattr(module, "HANDOVER_LOG", handover)
+
+    errors: list[str] = []
+    module._check_handover_entry(
+        branch="feature/current-branch",
+        strict=True,
+        ci_mode=False,
+        errors=errors,
+    )
+    assert "latest handover entry must not use placeholder next_ticket (#TBD)" in errors