Why is there a transparent shooting icon in the shooting interface on the POCO F7?

If there is a transparent shooting icon in the shooting interface on the POCO F7, please refer to the following details:
1. The POCO F7 supports setting Additional shutter, which can drag the shutter button up to create an additional floating shutter. This floating shutter can be freely positioned on the screen for more convenient photo-taking;
2. If you enable [Additional shutter] in the camera settings, there is a transparent shooting icon in the shooting interface;
3. You can go to [Camera] >> the arrow icon at the top of the screen >> the settings icon >> [Shutter type] >> disable [Additional shutter].