During the life of any joint tenant his interest may be attached, made subject to a mechanic’s lien, judgment lien or other lien authorized by law, or sold on execution, all in the same manner as if he held his interest as a tenant in common; provided, upon the death of any joint tenant owning that interest, the attachment or lien or execution, unless and until it becomes invalid or unenforceable for some reason other than that death, shall likewise continue valid and enforceable against that interest as and when it accrues to the surviving tenants or tenant by reason of that death, but it shall not otherwise affect the rights or interests of any of the joint tenants, nor prevent any severance from being effected by any appropriate act pertaining to the interest of any of the joint tenants.