Hi everyone. I have a problem with a HTML5 drag/drop. When i drop a certain elements using HTML5 drag drop events on my page the drop is executed correctly and afterwards firefox tries to navigate to a different url. The same code works for IE 11, Edge and Chrome. It only fails in Friefox (regardless of version) To see the effect you can navigate to www.darkbird.de --> click on 'LIVE-DEMO' --> 'Geschäftsführer' --> 'Planung' --> 'Daily Bugle' --> Drag on item from the Column 'Schichten' onto a gray block (that appears when dragging) and drop it. The dragged information ev.getdata('text') is '.shiftguid=f5c9bdb4-5570-4f32-8a4a-0c8f2877d3b0'. The javascript for the drop operation is executed correctly and then the browser changes the url to 'www.shiftguid=f5c9bdb4-5570-4f32-8a4a-0c8f2877d3b0.com'. I checked everything multiple times and it is working on the lastest Chrome, IE, Edge and Safari on Windows and Mac. Only firefox has this strange behaviour. I would be very glad if you could help me out. Cheers Tobi