Yes, and pay close attention to how I spelled out what to do after that when I suggested using the magic variation of the pip install command above in my original reply. ipympl changes a lot of things that don’t easily get changed without going through extra hoops, the sort of things you don’t usually need when installing other packages, like say pandas. That hard refresh in the browser on the notebook page is important with ipympl.
For some context about magic variation of the %pip list:
The magic pip command variation was added in 2019 to ensure the the pip commands like list and install act in the environment where the kernel is running that backs the active notebook.
See more about the modern %pip command here.