I noticed while training cartography that world maps made by me are cropped on the east and south sides, as if the image was resized incorrectly into the gump.

Taken using the CUO client
left - World map crafted at 99.2 cartography
right - World map purchased from vendor

Taken using the official enhanced client
left - World map crafted at 99.2 cartography
right - World map purchased from vendor
Also, I am not a GM cartographer yet, so the gump size seems to be too large compared to what is claimed in the official UO wiki in the ship guide (right below where it explains about the britannia ship). Curiously, the page on cartography makes no mention of this difference.

Taken using the CUO client
left - World map crafted at 99.2 cartography
right - World map purchased from vendor

Taken using the official enhanced client
left - World map crafted at 99.2 cartography
right - World map purchased from vendor
Also, I am not a GM cartographer yet, so the gump size seems to be too large compared to what is claimed in the official UO wiki in the ship guide (right below where it explains about the britannia ship). Curiously, the page on cartography makes no mention of this difference.