Fullscreen notification disappears after unlocking screen while receiving a call

[RTechSn]

Steps to reproduce

1. Have your phone locked, screen turned off
2. Make a call from another device
3. Call screen will appear, but the phone is still locked and fingerprint icon displayed on top of the call screen
4. Unlock the phone using fingerprint
5. Talk will crash

Expected behaviour

Not crashing

Actual behaviour

Talk crashes

Device brand and model

Google Pixel 6a

Android version

14 (GrapheneOS)

Nextcloud Talk app version

18.0.1

Nextcloud server version

Nextcloud Hub 8 (29.0.1)

Talk version

19.0.1

Custom Signaling server configured

No

Custom TURN server configured

Yes

Custom STUN server configured

Yes

Android logs

No response

Server log

No response

Additional information

I can't reproduce this on another version of Android. Seems to be some kind of conflict with GrapheneOS. All permissions are granted though.

[jimmy5670]

same situation here in Version 21.0.0, but I think the talk app not really crash, its seems like the notification just covered by lock screen or launcher makes it disapear, I think talk app could make it obtain "Display over other apps" permissions might fix it ? I saw lots of instant messaging applications have required this particular kind of permission ,and they recieving calls working well.

[RTechSn]

I think crashing has been fixed sinse, but i've forgot to update the issue. @jimmy5670 should I keep this issue open, or will you create a new one with more accurate info?

[jimmy5670]

@RTechSn it better keep this issue open, because I can still encountering same situation now, there are more info following：

Expected behaviour Calling notification keep on screen until unlock or directly answer it.

Actual behaviour calling notification fullscreen shows up in the blink of an eye while the phone is on lock, then notificition screen disapeared then lock screen replace it.

Device brand and model Motorola edge 20 pro

Android version 13 (GrapheneOS)

Nextcloud Talk app version 21.0.0

Nextcloud server version Nextcloud Hub 10 (31.0.0)

Talk version 21.0.0

Custom Signaling server configured No

Custom TURN server configured Yes

Custom STUN server configured Yes

Android logs N/A

Server log N/A

Additional information when recieveing a call from others and still ringing, talk app can still be open after unlock, but I can't find the calling notification again, thats why I still can't answer it. My theory is that might relative to "Display over other apps" permissions?

[mahibi]

ToDo for devs: read about

• ACTION_MANAGE_OVERLAY_PERMISSION
• System alert window changes
  • https://developer.android.com/about/versions/11/privacy/permissions#system_alert_autogrant
• RoleManager
  • https://developer.android.com/reference/android/app/role/RoleManager

[mahibi]

related: https://github.com/nextcloud/talk-android/issues/1667