How much does a previously launched activity open instead of the one launched by the user?

Question

Android

The application has several activities, each with its own icon in the launcher. Here is their intent-filter:

<intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

If you start the first activity and return to the launcher (press home), and then start on the icon of the second activity, the first one will continue to work.
How can this behavior be changed?

Answer 1

Maybe this is a simple bug and this bug can be a victim of your launcher for hackers fix it quickly before it gets hacked.