A certain contraption can be used to create lighting glitches

Steps to reproduce:

1. Open the world provided here: https://drive.google.com/file/d/19l2j_xqDQReovve5hVJOE87Zq1V5F9UR/view?usp=drive_link

2. Place a redstone block at 1352 64 1657 to start the contraption.

3. Enter spectator mode and set your speed to the maximum.

4. Fly into the positive X/Z direction until you are at the stony shore/mountain.

5. Fly back to the machine.

6. ❌ Sometimes a lighting glitch is now visible where light is cut off at a chunk border.

7. If this did not happen, restart the machine if it has stopped and repeat the process.