Using /fill with destroy mode displays particules only in the upper southeastern block (positive x/y/z), and not in the range of the /fill
This bug comes from 17w18b as /fill works correctly in 17w17b
Example with /fill x1 y1 z1 x2 y2 z2 air 0 destroy (The /fill was on a 2x3x4 area):
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