Breaking React change

core.cljs

(ns om-tut.core
  (:require [om.core :as om :include-macros true]
            [om.dom :as dom :include-macros true]))

(enable-console-print!)

(def app-state (atom {:text "Works", :data {:text "Doesn't"}}))

(defn liker
  [data owner]
  (reify
    om/IInitState
    (init-state [_] {:count 0})
    om/IRenderState
    (render-state [_ {:keys [count]}]
      (dom/p nil
        (dom/button
          #js {:onClick #(do
                           (println "Incrementing from " count)
                           (om/set-state! owner :count (inc count)))}
          "Like")
        count))))

(defn like-data
  [root owner]
  (om/build liker (:data root)))

; Works
(om/root
  liker
  app-state
  {:target (. js/document (getElementById "app0"))})

;;; Doesn't
(om/root
  like-data
  app-state
  {:target (. js/document (getElementById "app1"))})