I have updated my S7 to OneUI 3.1. I also use Nova launcher. I find that when I open up the multi-tasking screen that some of the icons across the bottom have been replaced by generic Android icons (I’ve uploaded a screenshot of the area, although the icons have not been replaced in this sample). It usually happens after it’s been 2-3 days since I rebooted the tablet.
I’m not sure if those icons are managed by Android or by Nova launcher.
It goes back to normal when I restart the tablet.
Has anyone else experienced this.