Impacted versions:
11.0

I don't know if it is an issue, but I think is strange.

`product_qty` is in unit of `product` : https://github.com/odoo/odoo/blob/11.0/addons/stock/models/stock_move.py#L240
`reserved_availability` is in unit of `stock.move` : https://github.com/odoo/odoo/blob/11.0/addons/stock/models/stock_move.py#L295

`move.product_qty - move.reserved_availability` seems to have no sens, no ?

https://github.com/odoo/odoo/blob/11.0/addons/stock/models/stock_move.py#L915
https://github.com/odoo/odoo/blob/11.0/addons/stock/models/stock_move.py#L917
https://github.com/odoo/odoo/blob/11.0/addons/stock/models/stock_move.py#L924

thank for your answer

@jco-odoo 
@alnslang 


'product_id': self.product1.id,
            'product_uom': self.uom_unit.id,
            'product_uom_qty': 10.0,
            'picking_id': picking.id,
        })
        picking.action_confirm()
        picking.action_assign()
        move1.quantity_done = 10
        picking.action_done()
        self.assertEqual(len(picking.move_lines), 1, 'One move should exist for the picking.')
        self.assertEqual(len(picking.move_line_ids), 1, 'One move line should exist for the picking.')
        ml = self.env['stock.move.line'].create({
            'location_id': self.stock_location.id,
            'location_dest_id': self.customer_location.id,
            'product_id': self.product1.id,
            'product_uom_id': self.uom_unit.id,
            'qty_done': 2.0,
            'picking_id': picking.id,
        })
        self.assertEqual(len(picking.move_lines), 2, 'The new move associated to the move line does not exist.')
        self.assertEqual(len(picking.move_line_ids), 2, 'It should be 2 move lines for the picking.')
        self.assertTrue(ml.move_id in picking.move_lines, 'Links are not correct between picking, moves and move lines.')
        self.assertEqual(picking.state, 'done', 'Picking should still done after adding a new move line.')
        self.assertTrue(all(move.state == 'done' for move in picking.move_lines), 'Wrong state for move.')
    def test_put_in_pack_1(self):
        """ Check that reserving a move and adding its move lines to
        different packages work as expected.
        """
        self.env['stock.quant']._update_available_quantity(self.product1, self.stock_location, 2)
        picking = self.env['stock.picking'].create({