When any block is selected in the beacon GUI, the block is not shaded correctly.
Images: http://imgur.com/a/CtVot
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Can't reproduce in 1.4.3. Please confirm.
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

This is no longer reproducible --> Fixed.
I can confirm this.