Hi there! Let's get to the bottom of this. Just to clarify, after you installed DuckDuckGo on your Linux device using the WebKit browser, your entire desktop including icons vanished, is that right?

Could you let me know if the desktop environment itself disappeared (like the taskbar, panels, or wallpaper), or is it just the icons that are missing and everything else looks normal?

Meanwhile, here are some initial steps we can try:

1. Check Desktop Icons Settings:
Sometimes desktop icons might be hidden due to settings. Depending on your desktop environment (e.g., GNOME, KDE, XFCE), there’s usually an option to show or hide desktop icons. If you let me know which one you use, I can guide you on how to check this.

2. Restart the Desktop Environment:
Sometimes the desktop manager crashes or freezes, causing icons to disappear. You can try restarting it without rebooting the whole system. For example, on GNOME you can press Alt + F2, type r, and press Enter to restart the shell.

3. Look for Hidden Files or Corrupted Configurations:
It could be a config issue triggered coincidentally when installing the app. You can try to check if your desktop configuration files are intact.

4. Reboot Your System:
If you haven't already, a quick reboot might restore normal desktop functionality by refreshing system processes.

5. Uninstall DuckDuckGo Temporarily:
Just to be certain, try uninstalling the DuckDuckGo application and see if your desktop icons return.

Please let me know which desktop environment you're using and if any of these steps already helped or not. That way, I can provide more tailored guidance.