[Vanilla Bug] Spotlights won't track units at lower elevations

[Crimsonum]

First Check

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Description

Map triggers can be used to make spotlight towers track enemy units with their spotlights. However, if the units are situated 2 or more height levels below the tower, the spotlight won't detect and track them.

Required Code (optional)

No response

Steps To Reproduce

1. Download the test map below.
2. Place the map in your TS folder.
3. Start the TS GDI campaign.
4. Move a GDI unit to the spotlight's path.

Expected Behaviour

Regardless of the elevation the unit is in, the spotlight should start tracking when the unit is caught within the spotlight.

Actual Behaviour

The spotlight does not track the unit if the unit is 2 or more height levels below the tower.

Additional Context

Test map