Arcs and Chapters cannot be edited in Adventure builder

Hi all,

Unsure if this is the right place to ask about this, so please let me know if I am barking up the wrong tree - but!

It seems like in Heart of Daggers' adventure editor I cannot in any way edit arcs or chapters. The rich text editor is fully blank and not interactive. Has this perhaps been caused by some of the new changes and a bug got introduced or is it only me?

Thanks in advance for helping out, and thank you for this wonderful tool, whoever is working on it!