More trying to fix the synch issue

I know that the inventory works flawlessly if players interact with it,
but adding an item to a slot manually doesn't update peers who have open
a container pointing to this inventory. Clicking the slot in question
causes the slot to update properly, but it doesn't get the auto-updates
fired between peers and I can't seem to figure out why. Manually
distributing updates from the server inventory to party members seems
the most reasonable at the moment.