Custom Popup template

[NikolaCacanoski]

I am trying to create a custom Popup Template but it's not rendering on the map. 

When I click something on the map, it still shows the old /default popup. 

Why is the old default one still showing? Am I doing something wrong? 

When I inspect the default popup, it says the classname is Esri popup wrapper. 

[Noah-Sager]

Can you share a working codepen that shows the issue? It would be helpful to see the layer for the popup as well.

Also, here are some useful resources:

Popup Template sample

ArcGIS API for JavaScript Sandbox 

Popup Template tutorial

Configure pop-ups | ArcGIS API for JavaScript 4.14