diff --git a/bisect/47105.py b/bisect/47105.py
new file mode 100644
index 0000000000000..188e78f9226b4
--- /dev/null
+++ b/bisect/47105.py
@@ -0,0 +1,13 @@
+# BUG: nan comparisons behave differently on identical objects #47105
+
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+idx = pd.Index([np.nan])
+result = idx > idx
+print(result)
+
+expected = np.array([False])
+pd._testing.assert_numpy_array_equal(result, expected)