Note 8 navigation bar turned black in one app

[alphaOmega]

Hi all, the navigation bar has turned black in one app (whatsapp) on the main app screen (no where else in the app or phone). Does anyone know what I need to do to change this bsck?

Thanks

[Inuyasha]

Same here whenever I open my whatsapp the navigation bar turn black I check all the setting but I found nothing please guide me with this problem 

[uman]

having the same issue with s10e on android 10, does anyone know how to fix?