I know that this is technically a duplicate of MC-36602, but this is how it should be fixed.
Make a new Redstone Ready superflat world, and run this command:
/tp @p 0 56 0
After that, run this command:
/setblock 0 55 0 minecraft:red_sandstone
A red sandstone block will be placed under you. After that, go into the debug menu (F3) and take a step west. Your X coordinate should be `-0`. Run this command to mark this position.
/setblock ~ 55 ~ minecraft:red_nether_brick
Now, run this teleportation command. This changes the coordinates to the same ones you are standing on now.
/tp @p -0 56 0
Notice anything? It will teleport you back onto the red sandstone, and not keep you on the red nether brick. This is because the debug menu interprets `-0` as a different coordinate than `0`. The debug menu's `-0` are commands' `-1`. In order to fix this, the debug menu has to get rid of `-0` (it isn't a real number). We don't need any savefile changes; you just need to offset the coordinates by -1 if the coordinates are less than 0.
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Comments 7
@unknown, there's a "Block" on the debug screen, which shows the exact coordinates. And there's no -0 there, only -1 and 0.
So, this is WAI and a dupe of MC-36602
Cannot confirm for 1.11
Do you mean -0.x? as x coordinate?