short-lived object 所以短时对象
POIDs provide a long lived object with a global identity that transcends space and time.
POID提供了一个生命期较长的对象，它的全局标识的作用域可以跨越空间和时间。
The weak reference from the long-lived object to the short-lived object is kept long after the short-lived object has been destroyed.
在短周期对象销毁后，长周期对象对短周期对象的弱引用依然会长久保留下来。
Another situation covered by this hotfix is when lots of short-lived elements have properties that are data-bound to a dependency property on a long-lived object.
该补丁还会解决大量短暂生命周期元素的属性绑定到了长期存活的对象上的情况。
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