Same problem here...I have a very small base and I saw dupes sweep an item and drop it off in a container that was 3 times farther away than the nearest "not full" bin. All my bins have the same priority and accept all materials. I can only imagine how inefficient it will be when my base grows...it's very frustrating!!!
I've read a few instances where people have found gas spawning in there base with no known source. You can add me to the list. With no known source of chlorine or natural gas, the lower level of my base filled with the two gases within a cycle and over pressurized my base so I couldn't generate any oxygen! Needless to say there's no way to recover from this. Please look into this. I've reloaded different saves to no avail. Thank you.