Hi,
I am experiencing a bug on the new version of Experience Builder Developer (1.4).
When I add a Views Navigation Widget within a Sections Widget, I get an error message saying "Cannot read property 'widgetType' of undefined". This was working before on 1.3
Here's my app for tracking the Perseverance Rover on Mars that shows this working:
https://experience.arcgis.com/experience/84a507c94b3a4b32b654e7f544ad1d52
It's on the bottom left corner:
