Just Updated to the newest snapshot and random portions of grass blocks have disappeared in chunks that had been generated before updating. Newly generated chunks were fine however. This world was previously on 1.7.10 and was originally generated in MC alpha 1.1_02 I believe (the update just before the nether update). I suspect it is related to MC-50998 as, in previous snapshots, the same parts of grass had missing textures.
Edit: having done some research, I think that the reason these blocks are invisible is because older worlds had scrambled metadata for blocks (think leaf blocks after the beta 1.3 update). because of this, the game can't find the correct texture for the grass block and should render them as black and purple checkered blocks. However while that is a problem within itself, a new bug has arisen causing the blocks to instead be rendered invisible, similar to loading up a modded world in vanilla. Thanks to MC-69646 for some of this info.
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Again, just updated to the 1.8 update and my Vanilla world still looks like above. Are there any plans to change this or are older users just going to have to start new worlds? If so this is highly disappointing as I have played the same world for years! 😞
Hi, just tried it. it took over 2hrs of processing to replace every grass block with a dodgy ID with a standard grass block (I have a very large world) however My world does now work in 1.8, which is nice.
Would be good if there was an official fix, or even an acknowledgement of this bug from mojang though...
Can a mod please update the affected Versions to 1.8.3? Thank you.
This bug is so bad, so many custom Maps are broken in 1.8 because they were build with blocks that had unused Block ID's.
I was able to reproduce it/I have the same Problem in a world which was originally generated before Alpha 1.1.2 (Halloween Update). This bug only occurs in a small area maybe as big as a world seen with render distance 12.
So I tried to fix that:
Start your world in a pre-1.8 Version (e. g. 1.7.10), with a mod like WorldEdit installed (maybe you can also use MCEdit)
Mark all affected grass blocks (which you can see in your world with Minecraft 1.8+). Make sure the number isn't too big, your Computer may not be able to handle it! Use //Count grass to Count all grass blocks.
Replace the grass blocks with another block not used in your marked area. I used mushroom blocks (99), //Count is useful for seeing if a block is already used in that area
Replace all mushroom blocks or whatever you used with grass
Save!
Load your world with Minecraft 1.8+
This worked for me.
(Grüße an Galaxy_2Alex, wenn du hierüber stolperst! Vlt. kennst du meinen Namen ^^)
Just tried loading my world in the 1.8 pre-release, same thing happened. Is there any fix for this yet? are mojang aware of this bug?