I have attached screenshot referring to the bug I found in EasySocial 1.2.17 Beta 1. All the details are posted in Issue #1634... just don't know how to attach screenshots there.
In the first screenshot below you can see me trying to comment both on a shared video and on a shared link. Both get stuck on "Saving" and if I refresh there is no comment. (It will however bump an item to the top as if I had commented on it)
On the other hand, if I comment on a normal status update it works perfectly as reflected by the second screenshot.