Maps work in the nether, however, upon opening one, the blip that represents your character will perpetually spin.
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is duplicated by 1
Comments 2
Thank you for your report!
However, this issue has been closed as Working as Intended.
See MC-12412.
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This works as intended. Locator maps aren't supposed to show the direction that players are facing when in the nether; they just spin, like compasses.