Hello Clive Ng,
The issue you're experiencing—where dropdowns in File Explorer open upward and become hidden in fullscreen—is likely related to UI rendering or display driver behavior.
Here are a few steps you can try to resolve it:
- Update your graphics driver directly from the manufacturer’s website (e.g., Intel, AMD, NVIDIA).
- Try temporarily disabling any third-party display utilities or custom themes that may interfere with UI rendering.
- Switch File Explorer to windowed mode as a workaround until the issue is resolved.
- Create a new user profile to test if the issue is profile-specific.
- If the issue persists, consider running
sfc /scannowandDISM /Online /Cleanup-Image /RestoreHealthto repair system components.
If this helps resolve the issue, please click “Accept Answer” so others can benefit too.
Thank you so much!!!
Best regards,