beacon effects dont work in the corner chunks

beacon effects dont work in the corner chunks.

in the negative negative corner it will cut off 4 chunks 

in the positive positive corner it will cut off 1 chunk

in the positive negative corner it will cut off 3

in the negative positive corner it will cut off 3

it will only cut of one chunk in a corner if it is aligned with chunk borders 

the beacon effects randomly started working normally in the world shown below after testing but still wont work in a different world

this bug has been a problem off and on for over a year

the iron blocks represent the farthest distance that the effects work and the plus/minus signs represent positive/negative coordinates
the beacon is placed at 0,-54,0

the beacon effects also work farther in the negative directions 51 vs 50