Use the specialized options.txt attached below.
Please reselect the language to English manually.
Make a Hopper Clock (Two Hoppers facing each other).
Drop an item into one of the Hoppers.
Then open the Hopper tab.
Swiftly take the item to your inventory.
Boom! Crashed.
Is this still an issue in the current Minecraft Snapshot 15w46a or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.