Sosumi - Keynote hanging when presenting or adding animations

I installed sosumi on an HP EliteBook 840 G7 notebook running Ubuntu 20.04.
Everything looks great but, unfortunately, Keynote does not work properly on my machine. When trying to view any presentation, or when adding any animation to a presentation, the cursor turns into the spinning wheel and stays that way. Keynote must be quit forcefully. This happens consistently.

I’m assuming it’s related to graphics processing but I have no clue what to test. Since I don’t see any error messages in the terminal, I am not sure what information I can provide to resolve this issue.
Please let me know if there is any information that I can provide to figure out what is going wrong.