On my S20 Ultra, when I open the Camera App, then select Settings, the Settings screen opens for a split second then automatically closes. I am up to date with all software, and have rebooted the phone.
@Stampeder55: If the issue has persisted, then please restart your Galaxy S20 Ultra in Safe Mode, as this will disable all third party apps, and help to determine if the problem is stemming from an external source. To enter Safe Mode, press and hold the Power button until the 'Power off' prompt appears on the screen then release > Touch and hold Power off until the 'Safe mode' prompt appears then release > To confirm, tap Safe mode.
While you're in Safe Mode, please open the Camera app and tap the cog symbol to open the settings menu. If you're able to proceed as expected then please restart the phone as you would normally and uninstall any recently added applications (those installed prior to the first time you encountered the issue).
If the issue persists in Safe Mode then please head to samsung.com > Scroll to the bottom of the page > Contact us, and reach out to our Help Desk via your preferred contact method, and an advisor will be able to assist you further, and arrange any necessary repairs.