I'm seeing and issue that I'm not sure how to resolve.
In our multisite, the super admin can create posts with no issues.
But, Site Administrators cannot - the code is being mangled.
This includes code for Google Adsense Ads, MailChimp Forms, etc.
For example, If I paste in the following Google Adsense code, the code in the red box is being stripped off when I save the post. (This only happens to site administrators - not super admin)
The same thing happens with MailChimp Code.
Here's a screencast of exactly what happens: