Draggable "connectToSortable" option, not working in ember.js

Draggable "connectToSortable" option, not working in ember.js

Hello everyone.

I am a Ruby on Rails developer and recently I started working with ember.js. I tried to use draggable and sortable, and everything works fine besides the "connectToSortable" feature of draggable. 

I have a sortable list that works as any sortable should, I have a set of draggable items that do everything they should de, except that they cannot be added to the sortable list, despite the fact that I have given the option "connectToSortable". I have no typos and the given element is correct ( checked with debugger, it exists and is present at the moment of each draggable initialization ).

What could possibly go wrong?