Confirming that this is still an issue, and that I'm pretty sure it's a bug rather than an intentional design choice: if you look very, very closely at the baseboard/plinth/whatever the thing inset at the very bottom of the counter is called, you'll see that the footprint of the left end piece juts out just a tiny bit beyond the rest of the island pieces. I have attached a screenshot showing the misaligned baseboard, compared to the correctly aligned baseboard on the other end of the island. This suggests to me that the bottom of the left island piece needs to be rotated ninety degrees.
