Strange behaviour inside PageBuilder?

Greetings ,

I have a strange question & problem but I am not sure if it depends on the Theme (Vantage Premium) and PlugIn (PageBuilder 2.x) and widget (Text) I am using.

Briefly, I have a JQuery simple routine inside a Text Widget that append selected string to a TextArea inside a form (I use Contact Form 7 PlugIn). I can have more string selected that will be inside the textarea and I’d like to have them separated be a new line. Here it is:

$(document).ready(function() {
 $("td#TDSerrPrd1").click(function()   {
     var str = $( this ).text();
     $("#PrdSelected").append ('n'' + str );
  });
});

The problem is that after saving the page the code is changed in this way:

$(document).ready(function() {
    ....;
    .... ;
     $("#PrdSelected").append ( ''n'' + str );
                                                            ^^
  });
});

with the backslash disappeared and with the consequence that I have no new line appended between the strings in the textarea.

Of course, the same code tested locally works fine.

Any help is really greatly appreciated.

Best regards,
Alberto Viola