Whenever we click the blue button to add a new line for “+” entities, the button copies all the previous entities, and below I have a suggestion for improvement for this field, within my technical limitations.

<button class="btn btn-block btn-primary" type="button" onclick="$('.entity_values_example div.row').clone().appendTo('#entity_values');">

<i class="fa fa-plus"></i></button>

Div where div.row will be cloned (It needs to be hidden and not editable)

<div class="entity_values_example">

<div class="row">

Div that we viewed and were able to edit

<div class="entity_values">

<div class="row">

As long as <div class="entity_values_example">it is configured as hidden and not editable, it <div class="row">inherits this configuration, as indicated in the clone that the copy of <div class="row">will be inserted into <div class="entity_values">(which is visible and editable), it will inherit this and a correct clean field will appear.

<div class="row">I noticed that this occurs because the clone always considers “entity_values_example div.row”, but each time we clone, they create several, the more they exist, the more they duplicate.