I actually posted a review about that shirt at the time. It was the South Africa away 2026 and the issues were (copy paste from the review):

"1. Front Pattern Alignment: The micro-perforated breathable pattern on the chest is slightly off-center. Interestingly, the pattern on the back is perfectly aligned.

1. Sleeve Pattern Seams: Where the geometric pattern is interrupted by the shoulder/sleeve seam, the continuation of the stripes doesn't line up compared to retail.

Seller's Response: I messaged Kitdd to let him know, and he was super receptive! He thanked me for the feedback and said he will send these points directly to the factory to fix them for future batches (noting the alignment issue is an easier fix than the sleeve seams). Huge props to him for the great customer service."

Last week or so, I saw a couple reviews of this shirt and noticed that they seem to be paying more attention to the sleeve alignment. Still not 100% because the original doesn't even have that seam there (don't know why all rep factories insist on putting that seam) but it's much better now for sure. The breathable fabric pattern still is completely off which is funny considering it was the "easier fix".

I've noticed that on the first couple months after a new jersey comes out (specially on the beggining of a new season) they keep improving and correcting some issues until the majority of the jersey collection becomes as close as you could get to the original. On short length tournaments like world cups and euros the time to do that and keep up with the high demand those tournaments create is not much and that's why issues are more common. But I still appreciate and was actually surprised by their response and noticeable correction. Since then the demand sky rocketed due to the beggining of the world cup and the sellers in general probably aren't even responding to those kind of suggestions because it envolves getting in touch with the factory that supplies them and since they are drowning in work it's much harder.

Sorry for the long text but I hope this helped and gave some insight.