If you press F4 to open the debug options, are any options checked on the "always" tab, such as these ones? Do the lines go away if you press F5 (which toggles the options on the "debug" tab)?
11-09-2024, 23-26-28.png (30.73 KiB) Viewed 272 times
My mods: Multiple Unit Train Control, RGB Pipes, Shipping Containers, Rocket Log, Smart Artillery Wagons.
Maintainer of Auto Deconstruct, Cargo Ships, Vehicle Wagon, Honk, Shortwave.