In §7.1 of the current Editor's draft, "flex-grow" and "flex-shrink" both have an initial value of "1", while in "flex" shorthand the initial value is given as "0 1 auto" - this looks contradictory to me, as in this case the "flex-grow" value is "0". Could You correct or clarify, please?
https://www.w3.org/TR/css-flexbox-1/#flex-property