CEP panel - title attribute line break

Hi all,

I've noticed that the title attributes of my CEP panel sometimes aren't interpreted correctly. The problem is the line breaks. 
Nothing seems to fix this issues, that, as far as I know, only happens on Windows.

This is what it looks like when hovering over the L button (the same happens on the C E and V buttons):

And this is what it should always look like:

It's Javascript generated, and this is the code:

function titleAttributes(isWin){
  
  if (isWin){
    $("#div_copy").attr('title', 'Copy<br>+ Ctrl: duplicate<br>+ Alt: mirror');
    $("#div_ease").attr('title', 'Ease<br>+ Shift: in<br>+ Ctrl: mid<br>+ Alt: out<br>+ Shift + Ctrl: in and mid<br>+ Ctrl + Alt: mid and out');
    $("#div_value").attr('title', 'Value<br>+ Ctrl: value and spatial int.');
    $("#div_linearize").attr('title', 'Linearize<br>+ Shift: in<br>+ Ctrl: mid<br>+ Alt: out<br> + Shift + Ctrl: in and mid<br>+ Ctrl + Alt: mid and out');
  }else{
    $("#div_copy").attr('title', "Copy <br> + Opt: duplicate <br> + Command: mirror");
    $("#div_ease").attr('title', "Ease <br> + Shift: in <br> + Opt: mid <br> + Command: out <br> + Shift + Opt: in and mid <br> + Opt + Command: mid and out");
    $("#div_value").attr('title', "Value <br> + Command: value and spatial int.");
    $("#div_linearize").attr('title', "Linearize <br> + Shift: in <br> + Opt: mid <br> + Command: out <br> + Shift + Opt: in and mid <br> + Ctrl + Command: mid and out");
  }
  $("#div_ext").attr('title', 'Toggle between Libraries');
}

Any ideas?