I bought a 15" rMBP today. First one was an SJA2 LG panel. Asked for them to open another, and it was an SJA1. Third one was another SJA2. Kept the first one, as it was perfect cosmetically.
Hoping it has no issues. I have so far seen no IR/ghosting and no other issues of any kind. I've left some finder windows static for quite a while without any retention.
Curious to see if anyone posts about an SJA2 with IR. So far haven't been able to find any posts online from SJA2 owners who have the issue. Fingers crossed that LG fixed it.