Man, we've been complaining about this since closed beta. It doesn't look like it'll ever be fixed even though it's a simple X coordinate position move.
The map coordinates are broken at 4K medium AND 4K large.
The only way to view them on the X1X is to use Small or Medium or 4K Small. BUT THOSE ARE SERIOUSLY ILLEGIBLE ON THE X1X unless you're sitting RIGHT NEXT to the screen, with your eyes glued to it, and using 4K Small.
The X1X runs the game in 4K always, even on a 1080P screen. (It downsamples the 4K image to 1080P on a 1080P screen, so the graphics look REALLY nice. But it also renders the GUI in 4K and when it downsamples it back to 1080P, that stuff is shrunk too. So "Small" and "Medium" which aren't 4K ... just are useless as all hell.)
Please, for the love of God, devs, fix this problem.
It makes it super annoying when other party members or people in the map tell you there is something at a coordinate and you have no idea where you are. Sure, you can pull up that giant map that is in the center, but that blocks all the combat. This is also an issue when the NPC is telling you to go somewhere or something is somewhere.
It's God awful.