Beam disappears where the wall is very far away [fixed]

[Lighter007]

Hi everyone!
I just have got a short Question:
Why does the beam of e.g a moving head disappears when I move it anywhere in the room, where the walls is very far away?

Thank you,
Lighter007

[support]

The beams have a specific length, which can be adjusted in window "3D settings > Beam rendering > Beam intensity".