The /fill console command is offset by 1 to the east compared to the F3 screen's coordinates.
For Example, what I see as being -110 64 5 is instead -109 64 5. I have added images to demonstrate
In fullsizeoutput_1 and _2 I run the command:
/fill -110 63 5 -110 32 -49 end_stone_bricks replace minecraft:water
and in _3 I run the opposite command.
/fill -110 63 5 -110 32 -49 minecraft:water replace end_stone_bricks
All with the F3 screen up in order to see the difference in coordinates.
Environment
Running macOS High Sierra 10.13.6 iMac
3.06 GHz Intel Core i3 Processor
4 GB 1333 MHz DDR3 Memory
ATI Radeon HD 4670 256 MB Graphics
Playing Java edition 1.14.4 on a Multicraft MCProHosting server
In Creative Mode
This issue duplicates MC-36602 (works as intended).
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