Optyczne.pl has reported that they found a potential issue with the production X-Pro 2s they received, which might explain the initial delay. When doing exposures of 3 minutes long without light entering the camera, there is what appears to be light entering on the left side of the frame and the phase detection pixels become visible when shooting above 3200 ISO. The issue is significantly more noticeable in RAW files than in JPEG, and these aren’t normal shooting conditions so I am not sure what prompted the test. After reporting the issue to Fuji, they were sent another camera with a newer 1.00 firmware and it somewhat corrected the issue, but not entirely. This shouldn’t affect most users, but you can read more about it on optyczne.pl.