Interesting, I can actually repro on colab: https://colab.research.google.com/drive/1gbUpNxLMlL4H-mKsgTh7UiU_JTSPHnvZ 13
I’ll open an issue to check that.
Going back to your original issue, if you can run the same code in a scirpt outside of the notebook, that might help you pinpoint things.
Otherwise, if you can make a simple repro, I can take a closer look as well.