Summary of the problem Visual bug With Draconic Evolution Energy Core/AE2 Pack Version 1.2.1 What is the bug? FTB Beyond 1.4.2 Draconic energy ball shell visible through the solid bits of transparent blocks. Screenshot here: http://imgur.com/a/UUUdK The yellow glass is Glowing Glass from Extra utilities 2 All of the other non machine blocks are Painted Glowstone, Painted as stone bricks or a vairant of colored antiblock. Mod & Version FTB Beyond 1.4.2 You guys need to update your dropdown list. Link to log file Is it repeatable? Constant effect. Known Fix Besides putting a layer of opaque blocks under the glass which would kill the look I'm going for. N/A.