It wouldn't surprise me if they did something like removing a banned list entry for a common SSD manufacturer thinking a known issue was resolved, and surprise,

It wouldn't surprise me if they did something like removing a banned list entry for a common SSD manufacturer thinking a known issue was resolved, and surprise, they were incorrect. e: A more interesting prospect, potentially, would be if they had some runaway logging thing somewhere in some cases that was blowing the SLC caching capabilities on a lot of SSDs, leaving you with the MLC/TLC/QLC/etc performance.