So everytime I die or log out the three slots for the red,yellow and green canisters goes back to hidden. The config shows hidden=false. This may affect the knapsack, but I tend to not use that item.

So upon first log in i have to use the chat command to reactivate the three slots.this was as of 1.9.3, will be testing 1.9.5 to see

That is actually something I missed. I overrode the configuration on those three slots, so they would always go back into hiding. Will be fixed with 1.10, probably out today =P

In fact, 1.10.0 is out, the cannisters should be fixed and the armorstand got a little upgrade ^^