The Pottery Shard textures, on all four shards, have different textures and shadings, compared to the Java counterparts.
[media]
UPDATE: Archer Pottery Shard has been fixed, but not for other shards in 1.19.80.20.
MCPE-167202
Pottery Shard textures are different from Java
Resolved
Fixed
0
(Unassigned)
979751
Confirmed
Multiple
vanilla-parity
1.19.80.20 Preview, 1.19.70.23 Preview
1.19.80.22 Preview, 1.19.80
Retrieved
With the introduction of the new pottery shards, this is now fixed.