My dtale version is 2.15.2. In jupyter notebook <img width="1072" alt="image" src="https://user-images.githubusercontent.com/12581433/236356967-b0699cbe-47ea-4005-9283-7f1cf11a0cc2.png"> I also tried d.open_browser() <img width="1144" alt="image" src="https://user-images.githubusercontent.com/12581433/236357005-9f312d0e-6314-45fd-b1d2-611eac99ef25.png"> Thanks for help.