What is the rule of displaying confirmation dialog which displayed when we use deeplink?

Hi. I want to know the rule of rule of displaying confirmation dialog which displayed when we use Deeplink.

My application have functionality to receive Deeplink, and when I tried opening my app from another application, I got confirmation dialog which roughly says " this application try to open my_app " at first time.

but second time and after, I don't get such dialog. Does anyone knows the rule of displaying this dialog?

What is the rule of displaying confirmation dialog which displayed when we use deeplink?
 
 
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