Is it possible to collapse the **width** of a group that is hidden ?

I have two groups (left and right) that are in the same row (a group as well), and that are both left-aligned.

When hiding the left group, I would expect the right one to take its position since they are left-aligned, and clicking on “explain box margin” displays a small margin for the group at the right.

However, this si not what happens: it just leaves an empty space and the group at the right stays at the same position…

Here is an example with the responsive settings (same for both groups):

And the explanation fo box margin. Note that the left margin of the right group is supposed to be 14px and **fixed**:

And here is what happens when the left group is hidden:

We clearly see that the left margin is not 14px while it was supposed to be fixed… I would expect to have the right group go left, as the arrow shows