Drag & drop issues

Hi, I'm having some problems with a couple of drag & drop tasks, which is making my workflow a bit frustrating. I'm on Firefox 59.0.2. When I drag items from a list in the parking lot the item remains on the list, and vice versa. Previously it would move from one to the other, rather than being duplicated. Is this an intentional change or a bug? If the former, please add an option to change the behaviour to how it worked previously.

The second problem is dragging tasks to the timeline for a particular day. Being able to do this is the most useful aspect of Week Plan for me. At the moment the tool tip which says which time you have dragged a task to is not working so it's not possible to accurately drop it on the time you want.

While I've got your attention there is one thing which causes me a real headache. When I have so may items in a particular day that the list is longer than my screen space (pretty much every day), I have no easy way to drag a task onto the timeline, which is really frustrating. Please could you make it so that lists automatically scroll when you drag something to edge of the window, so that it's possible to drag & drop when you are dealing with a large number of items?

Thanks