Our team recently pushed an update that completely overhauls the branding of the app. This includes logos, icons, colors, etc. However, when I pull up the list of app's preview on the device, the icon for the app still shows the old icon. I checked the app icons asset and confirm that all the icons are the new icons.
Where could this icon possibly come from? Here's the screenshot https://ibb.co/LzvxjNS
I had a same issue. Try restarting your device and reinstalling your app. It could be cached.