https://www.psacard.com/cert/05341261/
Card has been sold twice before in 2017 so your slam of the seller's username is incorrect. The Jackie Robinson card is frequently printed so that the black border is not a true rectangle.
Here are other examples:
1952 Topps - [Base] #312 - Jackie Robinson [PSA*4*VG‑EX]
Courtesy of COMC.com
1952 Topps - [Base] #312 - Jackie Robinson [BVG*6*EX‑MT]
Courtesy of COMC.com
1952 Topps - [Base] #312 - Jackie Robinson [PSA*6*EX‑MT]
Courtesy of COMC.com
"The three cards that were double-printed on the high-number sheet are #311 Mickey Mantle, #312 Jackie Robinson and #313 Bobby Thomson."
So that would explain why half are skewed from being a real rectangle and half are not.