Explain w. K-AI

I'm running the KNIME Analytics Platform 5.12.0 LTS Nightly Build) and attempting to use the "Explain with K-AI" feature but it appears that it's limited to 10 selected nodes. The error returned is "The number of nodes in the selected area is too large." Is 10 nodes the current intended limit, or is this a defect/regression? In a recent KNIME webinar (How to Build Clean, Organized Workflows that Turn Chaos into Clarity | KNIME

https://www.knime.com/events/how-build-clean-organized-workflows-turn-chaos-clarity-final?utm_term=follow-up&utm_campaign=community&utm_medium=email&_hsenc=p2ANqtz-9rQD2rUI6WQOwbA9_GpapNJScCA7X4hTED8GHX0LNUnSMjNlBfITFhZqer2iAg3YQqVQW5vxYQpk_zi4OD0PuCNKUUMw&_hsmi=138756169&utm_content=webinar&utm_source=event-email

) the analyst selected demonstrated the use of K-AI with much larger node selections. What am I missing?