Allan Rogalsky
Assigned
Reported
Comments
Is duplicated by MC-53568
Confirmed in my 1.8 snapshot test world.
This bug / change in game rules breaks the most common hopper mine-cart mob-drop collection system in survival. For such systems to be at all reliable 1 high slimes / magma cubes must be prevented from spawning on the tracks. Tracks can not be placed on transparent blocks, and if transparent blocks are placed above the tracks, 1 high slimes and magma cubes still spawn, get stuck and completely foul the system. The conventional solution has been to place solid blocks above the tracks with two snow layers on the solid blocks. This had the affect of suppressing spawning at both track level and in the item drop zone while still allowing the items to be picked up by hopper mine-cart.
Villagers have been despawning and there appears to be a correlation between which ones disappear and where the player is relative to them when logging in and out.
I have 4 DocM style iron farms within one render distance each built a few blocks below the sky box in a minimally spaced cross pattern centred on a beacon (~65 block village centre separation along the diagonal) . Is part of a spawn supressed parimeter base I am working on. All functioned well until I started working on a circular perimeter road with a 220 block radius centred on the same beacon. I normal load / unload the area from the same location (closer to the beacon than the farms, nether travel or login). My work on the road puts the farms at the edge of the render distance relative to my staging locations along the road (visible in the sky, parts of them appear / disappear depending on where I am standing). Villagers started despawning around when I started logging in and out in these locations. When it happens the whole 'pod' of villagers dissapear together and there appears to be a correlation between the number of empty 'pods' in an iron farm and how many times I would have logged in or out with it near the edge of the render distance. My trading villagers are located very close to the central beacon and none of them have disappeared.
Playing on a 1.8.1 server using 64bit windows 7.