Bug Description

Probably definitely caused by the compact vertex format.
Big Dripleafs zfight when next to a block. Most noticable when the dripleaf is facing west or north, however it occurs even when it's facing south/east because it has 3 pixels on each side that will face either west or north instead.

Reproduction Steps

Place a big dripleaf and surround it with blocks. Use a debug stick to make it face either north or west and you will see the issue.

Log File

A log file is not relevant

Crash Report

A crash report is not relevant

This should be fixed with ea01727.