So at a certain map zoom level (3 zoom outs from the last zoom level that lets you place objects/see things from radar), laser turret attack zones will be duplicated from other parts of the map.
In my case, I walked very far (about half the width of the map when most zoomed out) to the west, and the projection comes from the turrets on the most eastern part of my base.
Here's an image comparing the two, the top one is the view of the eastern part of the base (with the actual turrets) while the bottom is an image of the phantom attack outlines on the far west of my base.
- Factorio_Phantom_Laser_Attack_Outlines.png (298.58 KiB) Viewed 2946 times
