There is a problem with using the super buffer to output to an input bus attached to the packaging warehouse. The normal behavior of the input bus is to collapse the inventory, so if the superbuffer is configured to stock 9 items in the input bus, it will put in 9 items in each slot, but the input bus will collapse them into the minimum number of slots. This will cause problems because the bus ends up with all slots at 64 except for 1 slot at 9.

GTNewHorizons/GT-New-Horizons-Modpack#3151

Not sure if this is an input bus problem or a something that the packager warehouse requests, but I see the same behavior with the input bus on an EBF.

I think we should fix this issue in GT, since it affects using PAs filled with packagers. It's a problem with how the superbuffer and the input bus interact.