Describe the bug

Title says it all really, if you're playing a Minecraft map or something that has player-placed light blocks by the map builders, this will overwrite those and can remove them.

Steps to reproduce

No response

Expected behavior

Light blocks placed by players should not be touched.

Additional context

No response

Thanks for the bug report!

May I ask how this was fixed?

Sure. I just added a condition in the update functions in internal/place_light/ to abort the whole process if a light block exists without a marker entity of Dynamic Lights at the current position.
This may not work well if the placed light block has a low light level, since dynamic lights no longer work at that position, but otherwise I would have had to rewrite the no_space_resolve function or add additional data to the marker entities to reset the player-placed light block to its original light level after the dynamic light has moved, which would have added unnecessary overhead for normal use.

Oh I see, that's pretty cool!
Thanks for clarifying