When I was holding the Stone Brick item from the Creative inventory, it looked like the Mossy Stone Brick but in the inventory it looked fine.
If you can't reproduce the bug, then it may have been me replacing the Mossy Stone Brick with the regular on the hotbar.
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duplicates 1
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Marking as a duplicate of MCPE-2062 since that report includes a few more wrongly-textured blocks. Feel free to attach these screen shots to that ticket. 🙂
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