"Uncaught SecurityError" with embedded SoundCloud player

[samu]

I'm getting the following error:

Uncaught SecurityError: Blocked a frame with origin "http://localhost:8080" from accessing a frame with origin "https://w.soundcloud.com". The frame requesting access has a protocol of "http", the frame being accessed has a protocol of "https". Protocols must match.

I have a simple app that can display a list of sound cloud players.

Steps to reproduce:

Clone my repo https://github.com/samu/vue-playground, then npm install && npm run dev

In the browser you'll see a bunch of buttons labeled with x: Click the very last one and the exception will be thrown.

[txchen]

Related to #2852

[yyx990803]

Duplicate of #2852