PopupMenu to move tree node disappear very fast

During testing I discovered next bug...

1. Go to Account Element > Tab Element Value
2. Create 'Parent' node (summary level)
3. Create two child nodes (child 1 and child 2) - summary level false
Note: Parent has to be empty, without childs
4. Move child 1 into Parent > Child is in DB assigned, but not displayed in left tree panel
5. Move child 2 into Parent > Child 2 is displayed in tree
6. Go to parent tab Account Element and return back to Account Element Value sub tab
7. Now you will see parent 1 with Child 1 and Child 2

So bug appears when parent is empty and first moved child into parent is not displayed.

Thanks @Hiep Lq for fixing, it looks that your patch solve the bug. Thanks..

sorry @Carlos Ruiz, this issue is also in 2.1 because idempiere-1652 is apply to 2.1.

Issue is start from idempiere-1652.
root cause:
when move item, it will check current row is need save or not.
after more focus to first editable control in tab.

i see some other issue and improve it in my patch.
+ when move not need save current record, because you can more other node don't relate current note.
+ ever you move current edit note, it also not need save. after move you can decide save or not
+ same reason, when move node, not need change current select item.

remain below issue (in org window).
1. change current select record.
2. select other node, a message display to confirm save record.
3. select don't save
=> record is n't save and tabPanel still stand at this record. but tree is change to new select record.