WPF TabItem不会失去焦点

Question

I have a tabcontrol binded the an observable list. Eveything look to be perfect until I select a tab. Once selected, the tab doesn't lose its focus and the selected tab is not available. They are not any message in the Output Window.

Here is a screen shot just before clicking the tab:

And here is a screen shot after (with the problem):

Any idea about how to resolve this problem or any hint to be able to debug this kind of behavior?

Answer 1

问题在于，当打开选项卡时，它正在打开“ SAME”选项卡，似乎您无法在没有挂起选项卡的情况下在两个选项卡中添加相同的模型对象。