Confirmed in 1.8.4. When keepInventory is enabled you still have access to your items after dying, if you die with your inventory open. This allows you to craft and drop items while dead, which allows you to trigger wooden (or weighted) pressure plates.
Confirmed in 1.8.4. When keepInventory is enabled you still have access to your items after dying, if you die with your inventory open. This allows you to craft and drop items while dead, which allows you to trigger wooden (or weighted) pressure plates.