Editing video rich text element

[adamalfredsson]

When adding a video element in the rich text editor, is there anyway to edit it? The video custom element is the best documentation I could find on implementing something similar, but I can't seem to figure out how to edit the value after submitting the form.

Steps to reproduce

1. Edit a post in the demo cms
2. Add a video with any id
3. Attempt to edit the id

Thanks!