Hello!
I installed the Mapbox Pick List Brick app and adapted the code with a custom dataset. When I use this code in the editor, it runs and works in the preview without issue. Once I save it, the map and list elements fail to load.
I copied my code to Fiddle for reference:
https://jsfiddle.net/sam_n_cinci/w05qLamh/1/
The gif shows what I see when I'm building and previewing the app.
Once saved, it looks like this image and nothing I do will make it work again in the editor or once it's saved. I have to delete the card and completely re-create the app to even get it to work in the editor preview.
Any insight is appreciated!