I thought this was just a visual bug at first, but it seems that after starting the game up, the numbers on the limited barrels don't show up, and then the barrel won't accept items from cables/nodes/etc until they're updated manually (one item withdrawn and put back will suffice). Even after block update, it still requires the items previously not accepted by the nodes to be manually put into the drawers sometimes. Seems to only be an issue with the compression upgrade, though. Perhaps specifically the two slot barrels with compression upgrades because I have a three slot one that works fine without being updated.

Initial load appearance (Note: all two slot barrels have compression upgrades)

Printer has items inside, refusing to be moved into the barrels

Updated the inventory slots by removing one from the nether quartz and copper barrels

Copper has moved into the barrel by itself this time, however, sometimes it requires me to manually move them over and the laser nodes underneath won't move them on their own

All slots/barrels updated

Some items won't be moved and had to be manually moved into the chests by double right clicking the storage controller