Every commission, warrant, or other authority for the exercise of any office or employment of any kind or nature within the State issued or exercised by the Governor in Council, or the Governor, or by any other person in the name and on behalf of His Majesty in virtue of his office, or under the authority of any Act of the Imperial Parliament, or of the Parliament of the Commonwealth, or of the Parliament of Tasmania, or of any rules or regulations made thereunder respectively, shall continue in full force notwithstanding any future demise of the Crown until duly revoked or cancelled, and shall be of the same effect as if no such demise had happened; anything contained in an Act of the Imperial Parliament passed in the first year of His late Majesty King William the Fourth, chapter 4, to the contrary notwithstanding.