Yes, it does appear that way. Just guessing, but I wouldn’t think that the normal position for that bench was blocking the entrance to the shelter (as it was in the Zapruder film). So they probably moved it to that location (from its normal spot) initially.
No big deal. I think if they left the bench there and sitting on it that the wall attached to the east pedestal would block much of their view. Anyway, I just wanted an excuse to make this overlay with a similar view I shot in November 2019.
Also, you may notice that a section of that wall was removed a few? years ago to allow paved access for wheelchairs.