Breaking glassy blocks with a pickaxe enchanted with efficiency doesn't have any affect on the mining speed. These blocks include:
Glass (stained)
Glass Panes (stained)
Glowstone
Redstone Lamps
Sea Lanterns
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is duplicated by 1
relates to 3
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Comments 34
This seems to be true for all blocks without proper tools, unless I am mistaken. It's kinda like how you weren't able to destroy tool-less blocks in Adventure until that was fixed. It seems rather silly that no amount of efficiency allows you to break blocks such as glass and glowstone faster - they're meant to be fragile in the first place.
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.
Confirmed for all tools.