Drop doesn't work when we try to drop a dropable node after trying to drop a non-dropable node.
Please see a demo here:
http://jsfiddle.net/0hk1twng/140/In the above example the node 'S1' is the only node which is not dropable.
To experience the problem please try to:
- Step1: drag S2 and try to drop it on any node of Target tree (drop will be allowed)
- Step2: drag S1 and try to drop it on all nodes of Target tree (drop will not be allowed)
- Step3: now drag S2 and try to drop it on any node of Target tree (drop is not not allowed)
Why is the dropable node S2 not allowed to be dropped in step 3?