So the issue on Brave looks to be some nested fingerprinting in the amcharts javascript library somewhere with the html5 canvas usage. Updating the Brave browser shield settings to 'Allow Fingerprinting' gives the zoom/toggle on the map and the scroll on the charts.

All this to say - I know this is a terrible workaround, especially given the overlapping privacy principles of Brave and bitcoin/lightning, so I'll spend some time this week better understanding how this library works behind the scenes to get the Brave defaults in working order.

For anyone else reading this, Chrome, Firefox, and Edge all work on the charts - and I'll get a workaround for Brave shortly. Thanks for your patience 🤙