After reordering the rows of a One2Many the wrong line is selected.
Let's say we have 5 lines: A / B / C / D / E in this order.
In order to move B between D and E you have to select it, the counter displays "2 / 5".
The line is drag and dropped between D and E. The counter displays "4 / 5" but the second line is still the one selected in the list.