JOSM/Download Data Map

[K I]

Hello,

I usually use JOSM to edit OSM.
Is it possible to connect the downloaded world map divided in the Pacific
Ocean?
I think it's hard to see the divided areas.

I hope that the Pacific Ocean will not be divided and will be connected.
I am not thinking about the North Pole and the South Pole.
My ideal is to see the map in a loop like osm.org.

Video
https://youtu.be/FKW2AnB2tDE

Thank you,

Ikiya