I think there may be a compatibility issue between this and the Adaptive Storage Framework/Adaptive Deep Storage mods. I play with dozens of mods, so narrowing it down for sure would take way more experimentation than I'm willing to do, but Stack XXL is my only other mod that affects storage/hauling. The bug I'm encountering is that after a long time playing and working fine, sometimes the Deep Storage containers stop accepting items. It started with the clothing racks no longer accepting clothing, then shelves not accepting clothing either, and more recently the food barrels have stopped accepting food items.