Michael Meaden

It appears that MC-102223 is also covered by this issue (painting TileX, TileY, TileZ are mentioned in both issues).

I can confirm this issue for 1.8.9, 15w47c, 1.9 series (all), and 1.10. I can also provide more information and there are a variety of unusual behaviors related.

I was using the clone command and have migrated my operation to use Structure Blocks and the issue persists. The issue is purely visual, but server-side and relayed to the client and does persist through shutdown. What I've been doing is generating a maze with random cells, some of which include Monster Spawners and Enchanting Tables. When a Spawner or Table is cloned into the map (or loaded with a Structure Block) and then another block is subsequently cloned into the same location later, the particle effect emitted by the Spawner or Table remains. Also, if a Spawner or Table is cloned into a location previously occupied by a Chest, a similar glitch occurs.

I am cloning areas of 15x6x15. I have replicated the issue and it seems to require that you be cloning a certain number of blocks to trigger it; two is not enough but 200 is. I started taking screenshots of my setup but I realized it's easier to share structure files and directions! I've also discovered a few funny issues with blocks that have visual effects. I haven't tried many other blocks, but I do know that Chests, Monster Spawners, and Enchanting Tables all have unusual behaviors. Download the four structures MobSpawner, Sandstone, EnchantingTable, and Chest. Create a junk world and make a 7x5x7 spot, put a Structure Block, and load structures into the same location in order to see the different glitchy behaviors.

MobSpawner >> Sandstone (Glitch as described)
Chest >> Sandstone >> MobSpawner (Look, chest spawner!)
MobSpawner >> EnchantingTable (Pig, you're not a Blaze)
EnchantingTable >> MobSpawner (Uh, okay?)
Chest >> EnchantingTable (Looks more useful than it is)

Play around with it and you'll discover that manually breaking a block that has tile entity data that occupies the glitch block will clear the problem. The problem also isn't triggered unless a larger number of blocks are changed (e.g. from stone to air, or vice versa).

Confirmed for 1.9, 1.9.1, 1.9.2, and 16w15b.

Confirmed for 16w15b