Show details Icons not working

[napovader]

I Made a basic initialization of the table but when I open it from my phone or resize the browser the responsive show the + or - icons but it doesn't show the hidden fields

This is my table<table id="tabla" class="display dt-responsive no-wrap" width="100%"> <thead> <tr> <th>Profesor</th> <th>Materia</th> <th>Seccion</th> <th></th> <th></th> <th></th> <th></th> </tr> </thead> <tbody> <% @profesors.each do |profesor| %> <tr> <td><%= profesor.profesor %></td> <td><%= profesor.materia %></td> <td><%= profesor.seccion %></td> <td><%= link_to 'Show', profesor %></td> <td><%= link_to 'Edit', edit_profesor_path(profesor) %></td> <td><%= link_to 'Destroy', profesor, method: :delete, data: { confirm: 'Are you sure?' } %></td> <td><%= link_to 'Alumnos', alumnos_path("prof" => profesor) %></td> </tr> <% end %> </tbody> </table>

This is my script :
$('#tabla').DataTable({ responsive: true });

[kinsbrunner]

Same happening to me....

Is there someone looking after this fixes??? Just to know...