The texture of the Dark Oak Boat is entirely missing when viewed in the inventory, so it looks like there is just an empty inventory slot.
MCPE-217153
Dark Oak Boat Texture Missing
Resolved
Duplicate
1
(Unassigned)
Unconfirmed
PlayStation
25.02-11.00.00.43-00.00.00.0.1
1.21.80.28 Preview
Retrieved
This issue is being tracked at MCPE-200260.