If it is a pure actor problem, you would not see the visual effect but the target still got the damage. Therefore, it is more likely other problem in your case. Several causes are possible, such as range limit, target moved, unit facing, etc. Keep testing it with different situation (e.g. target moving, different distance, etc) can help you to pinpoint the problem.
If it is a pure actor problem, you would not see the visual effect but the target still got the damage. Therefore, it is more likely other problem in your case. Several causes are possible, such as range limit, target moved, unit facing, etc. Keep testing it with different situation (e.g. target moving, different distance, etc) can help you to pinpoint the problem.
When the beam doesn't fire, does the target take damage?