I notice a very usefull function in the edit.js entities list.
On windows you can select a row of items in a list with SHIFT
On Windows you can pick some items for selection with CTRL
Now the CTRL functionality is missing when you try to unselect items. As example when you selected to to much with the shift or need to skip one item.
Unselect by CTRL is not working. i Think that unselect is not implemented at al in edit.js