cocos creator v2.0.0.9Beta 编辑器删掉动画节点报错

Creator 2.x
#1

预制体上挂载一个动画，然后把prefab拖动到层级编辑器上，并且在动画编辑器上播放动画，然后再把预制体删除掉，这个时候会报：
TypeError: Cannot read property ‘getAnimationState’ of null
at refreshScene (D:\CocosCreator_v2.0_beta9\CocosCreator\resources\engine\bin.cache\dev\cocos2d\core\base-ui\CCWidgetManager.js:234:52)
at cc.Director.CallbacksInvoker.invoke (D:\CocosCreator_v2.0_beta9\CocosCreator\resources\engine\bin.cache\dev\cocos2d\core\platform\callbacks-invoker.js:167:29)
at cc.Director.mainLoop.CC_EDITOR._purgeDirectorInNextLoop [as mainLoop] (D:\CocosCreator_v2.0_beta9\CocosCreator\resources\engine\bin.cache\dev\cocos2d\core\CCDirector.js:444:26)
at EditorEngine.tickInEditMode (D:\CocosCreator_v2.0_beta9\CocosCreator\resources\app.asar\editor\page\scene-utils\editor-engine\index.js:1:2597)
at EditorEngine._tick (D:\CocosCreator_v2.0_beta9\CocosCreator\resources\app.asar\editor\page\scene-utils\editor-engine\index.js:1:5622)。
请问下这个怎么处理？

#2

同问 我也出现了这个BUG

#3

已经重现这个问题，我们会尽快修复

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#4

开发版本已修复，等 2.0 RC 版本吧