pioneers still have a problem hauling from stockpiles
before: pioneers will eventually stop taking consecutive haul order from same stockpile
now: a bit similar but much better and has workaround
if one pioneer is stuck or sees stockpile unreachable(specially the first pioneer who detects the order) the other pioneers will see the haul order unreachable and so they don't do it.
simple workaround I did was to order the pioneer(who is disconnected) or all idle pioneers a bit away from their position as to reset their path, and then they would detect the haul order again and take it.