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MC-87194

Oak and cobblestone stairs placed or generated (NPC villages) in 15w35b are invisible

The stairs in front of the doors at the villages are invisible and if you step on them it will glitch you.
At the top of the building the stairs are invisible too.
This bug does not happen in the desert village

Explanation from MC-87217:

When a village first loads in 15w35a/b, all stair blocks in the village will be invisible and will cause the player to stutter when walking on them. When the game is quit and the world re-loaded, the glitched blocks will no longer cause stuttering, however mobs will be able to spawn on them and the lighting glitch will remain. In both cases the blocks can not be interacted with. Updating the glitched blocks will fix the lighting glitch. The mobs that spawn on the glitched blocks spawn there due to the fact that when most hostile mobs spawn, the light level at the bottom spawning block is checked when spawning mobs. For example, as most hostile mobs need a light level below 8 to spawn, the game will check the block immediately
above the block that the mob will be standing on when it spawns. If this block is at light level 7 or below, a mob will spawn regardless of the light level of the block above, even if the bounding box of the mob is larger than that of the spawning block.

The lighting glitch is caused by the game generating the blocks but not rendering them, causing the blocks below to be at light level 0 (as stairs are opaque, the space they occupy is always at light level 0), and as the blocks exist for the game but not the player, the game treats the blocks as solid, however the player apparently does not, attempting to walk through the blocks as if they were non-solid. This causes the stuttering glitch. Reloading the world updates the blocks, causing them to effectively disappear, however this does not update the lighting engine, which will treat the blocks like any others at light level 0, and are therefore eligible for mob spawning.

Linked issues

MC-87198 Stair roofs arent on villages an mobs spawn on top of the black Resolved MC-87211 Stairs not spawned in villages, weird ligthing in place of stairs Resolved MC-87217 Village lighting glitch Resolved MC-87220 Ghost Block Generation on fill commands of generation Resolved MC-87224 Village roofs bugged Resolved

Attachments

Comments 26

The stair on the building are invisible too..

I had the same problem but after clicking on them they appeared. when I exit the chunk it disappears again and can click it again. how ever when i exit the world and start it again it disappeared but didn't seem to come back when i clicked it.

I have this issue too, but the stairs are actually gone, not just invisible. There's not hitbox; it's air.

Try placing a block where the stair goes, and it will pop up, Avantir.

Can confirm. After reloading my world, all cobblestone and oak stairs and doors (even self-placed!) in the village disappeared (turned into air blocks) which is really annoying.

16 more comments

Confirmed in Multiplayer. Oak wood stairs placed my players are invisible and they disappear for them after awhile. Also, other players will get stuck in the invisible stairs and can't get out unless they suicide.

Weirdly, only some doors of the village (constructed from cured zombies) completely disappear and replaced by air block.

happens with iron doors as well

The village that I am finding this issue is, is constructed, with some spawned/cured zombies. I used spruce doors which were fine, some cobble stairs in my arena - which vanished. And player heads which also vanished, - but remained present and did not glitch me when standing on them. MHF_CoconutB MHF_CoconutG MHF_Melon MHF_Pumpkin and non offical MHF_Apple - all took a powder. They vanished from sight after I logged out then back in.

Some iron doors poofed too.

Steps in a village made with cured zombies vanished.

Fantastic, even the heads are visible again! well done!

Kiko745

Erik Broes

Confirmed

Minecraft 15w35a, Minecraft 15w35b

Minecraft 15w35c

Retrieved