"ask-and-tell.ipynb" apperance has changed when run on newer version

[MortenSkovsted]

The example "ask-and-tell.ipynb" no longer looks as shown if rerun with the current version of ProcessOptimizer.
Image from github:

When rerun on new version (my computer and SRFU-NN):

What has changed to make it look different? What should be changed example or core?

My original idea was to base the introduction on this example as it is one of the easier to understand.