BUG: Embedding Youtube Playlist Breaks the URL

Version: v.0.16.18

Are you able to reproduce the bug from the demo?

[x] Yes [ ] No

What is the expected behavior? It should render the playlist

Describe the bug detailed Upon adding the playlist url using the embed code, it breaks and omit some parts of the url Ex: <iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list=PLibNZv5Zd0dzAOf54VjpLbqeALko1bD3h" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

It will then remove the "?list=PLibNZv5Zd0dzAOf54VjpLbqeALko1bD3h" leaving the url to be "https://www.youtube.com/embed/videoseries"

What is the current behavior? Should not reformat the url.

Descripe the bug detailed I tried adding the embed code of youtube playlist in the editor (demo site) and it breaks the url. Would love to see where the issue is coming from.

Are you able to attach screenshots, screencasts or a live demo?

<img width="1133" alt="Screen Shot 2020-07-10 at 9 40 15 AM" src="https://user-images.githubusercontent.com/29097518/87129498-b8851f80-c291-11ea-8af2-0738915115de.png">

[x] Yes (attach) [ ] No