Hello Alberto725,

This is a feature that we can call away from keyboard. It means "be right back soon". While subscribed users can do this according to their wishes (for example, a member who is eating or someone who is busy), all users who stay away from the game area for a while by opening another tab in the lobby can also appear with such shading. This returns to normal when returning to play. If it takes too long, DC will be  and a reconnection is required.