In the 17w46a snapshot it isn't possible to tab-complete coordinates, all coordinates have to be typed manually.
I have tested it with fill, clone, and setblock.
Environment
Windows 8.1
In the 17w46a snapshot it isn't possible to tab-complete coordinates, all coordinates have to be typed manually.
I have tested it with fill, clone, and setblock.
Windows 8.1
Duplicate of MC-121664