Hello, I have a question about Steam achievements.
I am using Unreal Engine 5.1 and have called Achievements->WriteAchievements to unlock an achievement (100%). However, the notification UI on the overlay does not appear on the screen while the game client is running, and it only appears when the game is exited. 
I want the notification UI to appear on the screen while the game is running. 
I am trying to find the reason for this, but I cannot find a solution.
Could someone please help me?