Views comment form missing when using replacement pattern

Hello @chrisck,
I've followed the steps as you mentioned above,
Added a comment replacement pattern in the custom text field and replicated the issue.
The reason is that Drupal handles the comment form separately from the comment list. When we use the {{ comment }} pattern, it only renders the list of comments as markup, but the form itself is no longer part of the rendered output.

So I've one solution for that we can use the Rendered Entity Field in view
Instead of using the {{ comment }} replacement pattern, do the following:

1) Add the "Rendered entity" field to your view.
2) Select the "Comment" entity with the "Default" view mode.
3) This will render both:
The list of comments.
The comment form.

Please check the attachment.
Thanks.

Hi @ishani patel @chrisck

I totally agree with the Ishani patel solution and it look feasible. As by adding following steps shared by ishani solve the problem of comment form display and its listing also. Sharing screenshots for reference. So moving this ticket to RTBC+1