Spiders spawn on leaves in Mushroom Island biome in spite of the fact that the Mushroom Island biome is supposed to be clear of hostile mobs other than those spawned by a Monster Spawner. I have experienced this bug with the 9th beta release and the official 1.2 release on Xbox One and the 9th beta release on Windows 10.
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is duplicated by 2
relates to 1
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This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).
This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).