I don't expect that all replies to a post are loaded when the post is first shown (on "New Posts"). The AJAX requests loads additional replies without the need to reload the BG feed.
Where talking different Views here... I was refering to the reply button not working on Mobile. As much as I hate it, Mobile should be the main focus.
Thanks for letting us know. Yes we resolved it :) There was an issue where the icon in the button would ignore the event depending on how you clicked it.