Adding another class to the link on the gallery section

Hi,

When editing the Gallery section for Onetone, the template allows to set a particular class on the link.

For example, the default template has this:

[ms_column style="1/3"][ms_image_frame src="http://www.mageewp.com/onetone/wp-content/uploads/sites/17/2015/11/8.jpg" link="javascript:;" link_target="_self" class="" id=""][/ms_column]

From that I assume that I should be able to customize a url link and a class identifier for the link. Changing the “link” works fine. But whatever I put into the “class” does not translate, when I look at the generated HTML code, I don’t see the class appended to the anchor definition. Only the href and the target of the tag are generated.