Nested lists: Cannot drag element back to parent list when sort = false [bug]

[mig8447]

Describe the bug

When applied to nested lists and setting the sort option to false, an item dragged from the root list to a children cannot be dragged back onto the root list before dropping it (If I regret moving the item the only way to move it back to the parent is by dropping it and dragging it back)

To Reproduce
Steps to reproduce the behavior:

1. Go to https://jsbin.com/yemafupaxi/1/edit?js,output
2. Drag element b to the sublist of element a
3. Without dropping the element, try to drag it back to the parent list
4. See error

Expected behavior

I should be able to return the element back to its place before dropping it when the lists are not sortable

Information

Versions - Look in your package.json for this information:
sortablejs = ^1.13.0

Reproduction
https://jsbin.com/yemafupaxi/1/edit?js,output

[owen-m1]

Fixed in commit 0a1bab7