Problems with adding HTML content to annotations/help pages

[hutchibw]

There are issues with uploading HTML content into annotations or help pages.

For example, when trying to link a video from youtube, the given embed code is in this format:
/<iframe width="560" height="315" src="https://www.youtube.com/embed/tq6be-CZJ3w" frameborder="0" allowfullscreen></iframe>/

But it produces this result in the editor

However, when it is changed to this format, it works for some reason.
/<iframe src="https://www.youtube.com/embed/tq6be-CZJ3w" allowfullscreen="" height="315" frameborder="0" width="560"></iframe>/

In addition, When using the annotation editor, trying to copy and paste a url etc. into the edit html field doesn't do anything.

This problem persists in whatever browser I try.