How to restore the Whatsapp Messenger icon? Not the app, just the icon

Question

Since quite some time now, the Whatsapp Messenger icon is not the proper icon, but the Android green trashcan icon. The app in itself is working properly, it just looks funny on the home screen.



Reinstalling is an obvious solution, but I would loose my chat history. Wouldn't I?



CAT B15Q, Android 4.4.2 (I know, ancient).


— Sander de Jong | Sources

Answer

After many automatic updates, one of the most recent ones spontaneously restored the app icon!



And after a few more updates, the proper icon was once again replaced by the Android green trashcan icon.


— Sander de Jong | Sources

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