The sequence for new items in some models is simply set to a constant 10. Hence if 3 items had after reordering sequences 10, 11 and 12. If a new item is added, it would get after saving at the second position. This fix set the sequence of a new item to the maximum+1 or minimum-1 sequence of current items sequences (max if tree has editable="bottom", min if tree has editable="top"). opw-627830