The Smoker bottom texture has the same texture as the top one, even though that's not how it should look. In Java Edition, there is a different texture exclusive to the bottom part of the block.
MCPE-43944
[Fixed] Smoker bottom texture uses the top texture
Resolved
Fixed
0
(Unassigned)
192969
Confirmed
Windows
Windows 10
1.12.0.2 Beta, 1.11.0.10 Beta, 1.11.0.7 Beta, 1.11.0.8 Beta, 1.11.0.9 Beta, 1.10.1 (Windows 10 only), 1.10.0
1.12.0.3 Beta, 1.12.0
Retrieved
I can confirm that the bottom texture of the smoker uses the top.