So the Android messaging app pinned at the bottom of the screen, always shows in its badge that there are 12 unread messages but I know there isn't any and when I open the app there is nothing unread too.
It sometimes goes away and then comes back, I can't find a pattern for it but I took a screen shot.
I'm using Android 9 on Sony Xperia XZ premium and Microsoft Launcher ver 5.9.0.54716
