Hello, I have experimented with the zebrafish.ipynb file and it seems that the results generated are different from what is presented in the tutorial, for example, the vector field topology. The ones in the tutorial show clearly the stable fixed points but the ones I obtained appear less clear. I just used the exact same script with nothing changed. Could this be due to a package version issue? I am wondering why the results are so different.
Here are the ones I obtained:

This are the ones in the tutorial:
