Is the author around?
Curiously, the editor does not render (well, it renders a black screen) in Firefox 78.9.0. I see this error in devtools:
Uncaught SyntaxError: expected expression, got '=' protomaps.min.js:1:52669
On props update af913d4d.0fa8ea22.js:1:7975 ReferenceError: protomaps is not defined