Not only does it stop the incessant dripping, it also makes making toast an excitingly dangerous adventure.
From the submitter:
the canister did not fit under the faucet..... So we made an adapter from a wash mitt, a tube and tape.
Submitter TurboJens explains this fix: The fill valve split in half and the floater does not cut off the water supply. The towel keeps the water inside and the wrench keeps it from overflowing.