Figure

■ My analysis
这个是Edge App的问题, 它启动的界面设置了不在Recent里面显示,所以在Recent里面看不到

//先启动Main界面
06-13 03:27:20.585 1551 2091 I ActivityTaskManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.microsoft.emmx/com.microsoft.ruby.Main bnds=[126,96][426,394]} from uid 10069

//在启动OrientationAdaptiveFirstRunActivity界面
06-13 03:27:20.614 1551 2102 I ActivityTaskManager: START u0 {cmp=com.microsoft.emmx/com.microsoft.edge.fre.OrientationAdaptiveFirstRunActivity (has extras)} from uid 10035

OrientationAdaptiveFirstRunActivity 是设置了不在Recent里面显示的

<activity 
android:autoRemoveFromRecents="true" 
android:configChanges="keyboard|keyboardHidden|mcc|mnc|orientation|screenLayout|screenSize|smallestScreenSize" 
android:excludeFromRecents="true" 
android:label="@string/fre_activity_label" 
android:launchMode="singleInstance" 
android:name="com.microsoft.edge.fre.OrientationAdaptiveFirstRunActivity" 
android:theme="@style/Theme.Chromium.TabbedMode" 
android:windowSoftInputMode="adjustPan|stateHidden"/>

对比正常启动的现象看,在Main界面启动后,接着启动的是 MicrosoftFirstRunActivity ,这个没有设置在Recent里面不显示
06-13 19:48:14.137 1062 2012 I ActivityTaskManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.microsoft.emmx/com.microsoft.ruby.Main bnds=[112,116][388,383]} from uid 10076
06-13 19:48:14.420 1062 8007 I ActivityTaskManager: START u0 {cmp=com.microsoft.emmx/com.microsoft.edge.fre.MicrosoftFirstRunActivity (has extras)} from uid 10037

至于为什么会启动不同的Activity,这个是Edge App自己决定的,我们从Home上启动的Edge都是com.microsoft.ruby.Main,在由com.microsoft.ruby.Main决定启动哪个activity

■ Next Action
需要App去修改,不建议修改