stairs, walls and slabs do not shade.

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However, this issue has been temporarily resolved as Awaiting Response

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Thank you for your report!
We're actually already tracking this issue at MCPE-363, so I will resolve and link this ticket as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

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