New Minecraft installation on iPad.
New World create (no marketplace templates used).  Random Seed indicated as 274966093.
Play Mode set to Creative / Peaceful.

When generating first map, zoom-level 0/4, the map is centered at 0,0 with top-left anchor at -64,-64. This is correct for both pre and post v1.8.0

Bad Zooming Behavior:
When zooming the map to zoom-level 1/4, 2/4, 3/4, and 4/4, using either an anvil or a cartographers table, the center point remains the same: 0,0
This behavior is the same as old mapping earlier than release v1.8.0
Version v1.8.0 and later should be: the top-left anchor should be -64,-64 and the centerpoint should move to 64,64 then 192,192 and etc. as the map continues to be zoomed out.

Please advise on the issue and the correction.

Screenshots with coordinates, inventories indicating map zoom levels, and maps showing position 0,0 still indicated as map centers.