A super quick fix for the sticky button on your "Invite Hot 100" hot water tap. No need to remove the unit from the sink, just pry out the button and remove the "O" ring. Replace the button and you are done!
UPDATE - 12/3/2022: Note that @johnmccormick8159 commented that he kept the O ring, cleaned and lubed it and the contact surface to restore the button like new. Don't necessarily dispose of the O ring but either technique should work for you. Thanks @johnmccormick8159 !