When typing the following command:
setblock 19 102 -0 minecraft:redstone_block 1 destroy
It doesn't spawn the redstone block in that position.
If I type the following command instead,
setblock 19 102 -2 minecraft:redstone_block 1 destroy
It will spawn the redstone block in X: 19 Y: 102 Z: -0
This doesn't happen with non-minus coordinates.
If you write -0 or -1, it will spawn the block at 0.

How to reproduce:
1. Type the following command in a command block. Be sure to be at least at X= -0 and/or Z= -0.
setblock -0 102 -0 minecraft:redstone_block 1 destroy
Because of the bug, it will spawn in 0 102 0 instead of -0 102 -0.
The same thing happens with -1, it will spawn in 0.
If you do this thing in -2, -3, -4 etc., it will spawn in -0, -1, -2 etc..