Table format views – output problem

I have a view that output  a table view, listing content grouped by year, date of publishing and title ( an archive by date).

The table outputs as follows:

year (e.g. 2017)

date of publishing ! title of post

The problem is that if I have several posts published on the same day the output shows the same date for each post:

Sunday, February 12 ! Title of post 1

Sunday, February 12 ! Title of post 2

Sunday, February 12 ! Title of post 3

What I am trying to get is :

Sunday, February 12 ! Title of post 1

                            ! Title of post 2

                            ! Title of post 3

Is this a grouping problem?

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/22/feed