They match on the 18w46a screenshot, but after 18w47a they look slightly different from each other since planks were updated but the lectern base plate (a plank texture derivative) was not.
Linked issues
is duplicated by 1
relates to 6
MC-154006
Overworld wood signs use the outdated wood texture on all sides
Resolved
MC-160388
Painting back texture has not been updated with the texture update
Resolved
MC-200046
Cartography table planks texture is incorrect/slightly outdated
Resolved
MC-200228
Composter bottom/inside may be using outdated plank shading
Open
MC-200138
Barrel bottom texture still uses the old planks texture
Resolved
1 more links
Hi there!
I can confirm.