MC-149322Block lighting resets to 0 when travelling through portals in certain chunks
I went through a nether portal, and most block lighting reset to 0. Sky light is fine. I had to download the world to optimize it and clear the cache data (because I can't just do that on a realm world) and that fixed the light, but the next time I went through a portal the same thing happened.
I went into the overworld, haven't tested in End or Nether, only went through Nether portals. 
edit: at first, only one of the portals did this, but gradually all portals, except for spawn chunk portals and the portal in the chunks I first logged in near when the realm first updated to 1.14
Environment
Realms world, recently updated. Most recent version of java I know, Windows 10.
Linked Issues
Attachments2
Created Issue:
Block lighting resets to 0 when travelling through portals in certain chunks
I went through a nether portal, and most block lighting reset to 0. Sky light is fine. I had to download the world to optimize it and clear the cache data (because I can't just do that on a realm world) and that fixed the light, but the next time I went through a portal the same thing happened.
I went into the overworld, haven't tested in End or Nether, only went through Nether portals.
Environment
Realms world, recently updated. Most recent version of java I know, Windows 10.
Attachments7
bug 2.png
I went through a nether portal, and most block lighting reset to 0. Sky light is fine. I had to download the world to optimize it and clear the cache data (because I can't just do that on a realm world) and that fixed the light, but the next time I went through a portal the same thing happened.
I went into the overworld, haven't tested in End or Nether, only went through Nether portals.
edit: we recently updated, and the only nether portal this happens to is the one I went through to the overworld side before reseting the cache
I went through a nether portal, and most block lighting reset to 0. Sky light is fine. I had to download the world to optimize it and clear the cache data (because I can't just do that on a realm world) and that fixed the light, but the next time I went through a portal the same thing happened.
I went into the overworld, haven't tested in End or Nether, only went through Nether portals.
edit:
we recently updated, and theonly netherportalthis happens to is the one I went through to the overworld side before reseting the cacheI went through a nether portal, and most block lighting reset to 0. Sky light is fine. I had to download the world to optimize it and clear the cache data (because I can't just do that on a realm world) and that fixed the light, but the next time I went through a portal the same thing happened.
I went into the overworld, haven't tested in End or Nether, only went through Nether portals.
edit: at first, only one of the portals did this, but gradually all portals, except for spawn chunk portals and the portal in the chunks I first logged in near when the realm first updated to 1.14
![[Mod] Neko](../../../data/avatars/users/92901.png){kind=small}
duplicates
this happened to us too. we updated from 1.13.2 to 1.14 and as a mod on here told me to fix it we had to optimize world and clear cache from a world that hadn't been opened in any 1.14 snapshots which we did but we still have this problem, and as the poster said portals seem to affect this.