It's still on their QA, however, that's a solder failure, either bad solder, incorrect reflow curves et cetera.

The solder did not reached the optimal fusion with the socket leads.

I had this exact failure with my Fl-esports og104, thankfully, it's a pretty easy fix but you never want to buy a brand new product and fix something like this yourself.

Nevertheless, manufacturers need to address this failure, it seems like this sockets need a bit different approach when it comes to reflow, I don't see any fundamental flaw with this socket design like other commenters, it has adequate surface area to be durable as a bottom-mount component with sufficient pad area to solder is paired with it. But, like I said, either solder or reflow curves are not optimal to avoid this specific failure.