That’s a default behaviour of WordPress. You will experience similar issues with the default comment form as well, unless you edit your theme to implement a “Cancel” button to reset the comment form back to the default state.
You can do so thanks to the cancel_comment_reply_link function:
http://codex.wordpress.org/Template_Tags/cancel_comment_reply_link
(@wpac)
12 years, 6 months ago
It’s nice that when you reply to individual comments instead of to the post the commenting box moves around. However, if someone decides after clicking that they really want to reply to the post instead, there’s no way of doing that without refreshing the page, since there’s no button or link to return the commenting box to the post. This is a potential frustration for website visitors who want to contribute to comments.
Ideally, I think there should be a commenting box at the bottom of the post at all times, even when you click to reply to an individual comment.
Also, oftentimes the appearance of the commenting box is delayed. A loading in progress text or graphic would be very nice.
Cheers.
http://wordpress.org/plugins/jetpack/