Not really found a pattern in it, but occasionally when opening 'balloons', zooming in and out and dragging the map around, the dragging stops working and you'll get the following in the console:
Uncaught (in promise) TypeError: L.Path.prototype._createElement is not a function
at e.setText (webpack.bundle-f2c1c47cb268add1268e.js:2:97060)
at e._textRedraw (webpack.bundle-f2c1c47cb268add1268e.js:2:96588)
at e.onAdd (webpack.bundle-f2c1c47cb268add1268e.js:2:96267)
at e._layerAdd (webpack.bundle-f2c1c47cb268add1268e.js:2:199660)
at e.whenReady (webpack.bundle-f2c1c47cb268add1268e.js:2:194821)
at e.addLayer (webpack.bundle-f2c1c47cb268add1268e.js:2:199973)
at e.onAdd (webpack.bundle-f2c1c47cb268add1268e.js:2:241676)
at e._layerAdd (webpack.bundle-f2c1c47cb268add1268e.js:2:199660)
at e.whenReady (webpack.bundle-f2c1c47cb268add1268e.js:2:194821)
at e.addLayer (webpack.bundle-f2c1c47cb268add1268e.js:2:199973)
Not really found a pattern in it, but occasionally when opening 'balloons', zooming in and out and dragging the map around, the dragging stops working and you'll get the following in the console:
which when expanded in Chrome, also shows this:
(I do realize this is a compressed javascript file, so the stack trace is probably not exactly useful)