Newer comments should not be collapsed, regardless of the sort order

How the feature works

When Sorted "newest first" , the comment will display in the following manner. When user try to add a new comment, the comment box will move up right on top of the "latest comment" so you can see the latest comment as you type in new ones.
[Comment 1] (newest/latest comment)
[Comment 2]
..
[Comment 5]
(click to see 100 older comments)

When sorted "Oldest First", the comment will display in the following manner
[comment 1] (oldest comment)

...

[comment 4]

[comment 5](5th oldest comment)

(click here to see 100 newer comments)

How it should work

Regardless of the comment order, the newer comments should not be collapsed, as it is time-consuming to expand multiple comments until we reach the newest one.