oop i counted the start files wrong it's mission 5, my bad
I've tried restarting the game and retrying the mission a few times and no dice. in the first mission where you have use the carts they worked fine, i could get stone and wood to my own estate
even in the same mission i can get food to my own estate and i see the granary in sir william's estate fill up, too, it's just the bar that is unaffected.
when the bar hits zero the ui for it kind of messes up too and goes past the boundary.
i don't really know how I would check that bug elsewhere in the game tbh... i guess if there's another mission with a timer and a resource bar that decreases, maybe?