Trigger events from other widgets when using the Drag&Drop.
Jitze de Groote
I've been able to fix it by excluding he event.preventDefault() method in codeline 923 within the jQuery UI library. Until now the users and me did not experience any other side effects.
However, I know that this adjusting the library is not a preferred solution, so I if anyone has better option, for example a change in the draggable.js itself please respond. But for I will set this question as resolved,