When loading a pad, the following occurs:

Those 4 lines of text were inserted into the document after loading. I didn't insert them, nor did anyone else, so I assume something with noscript did it.
The site is whitelisted or temporarily allowed, and changing embedding options does not appear to have an effect. The screenshot is from openetherpad.org, however this occurs on any site running the etherpad software.
NoScript Version: 2.0.9.3