Board Thread:Bug Reports/@comment-212.253.107.30-20150203210056/@comment-25330335-20150203235127

This is a known compatability issue with Optifine. If you are using oprtifine, your problem is resolved and this is not a bug. Use Fastcraft instead of optifine for better performance in ME. If you are not using optifine, this may be a problem. But for future reference, please post these things on tech support boards until we are sure that it is a bug.