It's caused by stick drift, you just don't notice the drift in normal gameplay because your drift is less than the default deadzone setting. However, the spawn screen doesn't respect the deadzone setting, and any small input will cause the cursor to move at full speed in that direction.
Edit: With further experience, I don't think it's caused by stick drift, the cursor just starts in the top left corner.
The cursor always go to the top left every time. I have 2 controllers and i dont think both would go top left every single time. Even if i had stick drift, why wouldn't it go like to the bottom left or right or top right. It's top left every single time. In other games when I set the deadzone to zero, no stick drift appears
