Problem with sibling children's keys

[andromorv]

Today i've updated rum to 0.3.0 version and this warning appears:

Warning: Each child in an array or iterator should have a unique "key" prop. Check the render method of pic-likes. See https://fb.me/react-warning-keys for more information.

My pic-likes component looks like:

(rum/defc pic-likes < rum/static
  [{:keys [likes] :as image} user]
  (let [likes-count (count likes)
        liked (contains? likes (:id user))]
    [:a {:class-name "pic-likes"
         :href "#like"
         :on-click #(do
                      (.preventDefault %)
                      (toggle-pic-like image user))}
     (pic-likes-counter likes-count)
     (icon {:class-name "pic-likes-icon"
            :icon (if liked "favorite" "favorite-outline")})]))

If I wrap both pic-counter and icon components with with-key function and give them different keys - problem disappears. But it's kind of strange, you can see I don't iterate over these blocks. They are just siblings.

[andromorv]

Ok, it's duplicate of this #33