Steps to reproduce the problem:
1. Go to https://tests.peter.sh/notification-generator/
2. Allow Notifications
3. Add the Page to the HomeScreen
4. Click on Display the Notification
5. See Crash Dialog
6. Remove added PWA Notifications App again
7. Click on Display the Notification again
8. See that the Notification is now delivered successfully

What is the expected behavior?
Notifications should be delivered also with a installed WebApk

What went wrong?
On Receiving a Push Notification while have added a PWA Page to the HomeScreen one gets a Crash Popup and no Notification is delivered (see attached Screenshot)

Logs (see attachment) showing:
09-20 16:32:21.996 26769-26769/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: org.chromium.webapk.aa3dfb4aec2b1da4e, PID: 26769
    android.app.RemoteServiceException: Bad notification posted from package org.chromium.webapk.aa3dfb4aec2b1da4e: Couldn't create icon: StatusBarIcon(pkg=org.chromium.webapk.aa3dfb4aec2b1da4euser=0 id=0x7f08010b level=0 visible=true num=0 )
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1623)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:145)
        at android.app.ActivityThread.main(ActivityThread.java:5951)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)

Did this work before? Yes 68.0.3440.91

Chrome version: 69.0.3497.100  Channel: stable
OS Version: 5.0.1
Flash Version: 

Issue is occuring on a Samsung Galaxy S4 (5.0.1) and a AWS Device Farm S4 Device with Android 4.4.4(?) on latest 69.0.3497.100 Chrome. After Downgrade to 68.0.3440.91 its working again - same if WebApk is uninstalled. 

Tested also on a 7.1.1 xiaomi, 7.0 motorola c and 8 samsung galaxy s7 devices on which the issue was not reproduceable and Notifications were delivered as expected - so i am not sure if is a samsung related issue or may occur also for other vendor / android version combinations
 

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