listener sends response everytime when the same listener is attached in a new tab

I have added a listener to get a list of records but this listener sends response everytime when the same listener is attached in a new tab.

Is there any way to stop it?

I used stateChanges() to retrieve records

首先，通过在两个标签页中附加同一个 listener 并观察重复响应，使用 stateChanges() 重现该行为。跟踪涉及的 AngularFire/Firebase listener 路径；当 listener 仍然返回记录且不发送不需要的重复响应时，即表示完成。

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