No popup when clicking on specific icons (BeautifyIcon plugin)

[Emanuel Castanho]

Hi!

I was checking the BeautifyIcon plugin demo and I don't understand why when I click on the plane icon the popup doesn't show up.
Here is the example: https://python-visualization.github.io/folium/latest/user_guide/plugins/beautify_icon.html

Is this a font-awesome related problem?

[Hans Then]

I can confirm the issue. In the browser console I see the following stack trace:

Uncaught TypeError: Cannot read properties of undefined (reading 'x')
    at p._add (Point.js:55:19)
    at p.add (Point.js:50:23)
    at e._updatePosition (DivOverlay.js:303:45)
    at e.update (DivOverlay.js:189:8)
    at e.onAdd (DivOverlay.js:113:8)
    at e.onAdd (Popup.js:135:30)
    at e._layerAdd (Layer.js:114:8)
    at e.whenReady (Map.js:1477:13)
    at e.addLayer (Layer.js:172:8)
    at e.openOn (DivOverlay.js:63:8)

[Emanuel Castanho]

I think the problem is inside Point.js, here:

_add: function (point) {
    // destructive, used directly for performance in situations where it's safe to modify existing point
    this.x += point.x;
    this.y += point.y;
    return this;
},

At least according to the console.