I don't have the issue you're describing.
You may try and see if your issue is solved by clearing your whatsapp storage.
Long-press your whatsapp icon and press the app info button (i with a circle in the top right corner). Press Storage & memory and Clear storage.
If this doesn't help, then try clearing the storage for your camera app as well.
And if that doesn't help then maybe you could try and uninstall the app and then install it again.