Congratulations to the tester that found the bug. Good testers think outside the box as this one had done, 248 days was perhaps an unlikely scenario but by bringing it up as a test fail it really got everyone's attention of what a simple oversight can do.
Once fixed it's going to take another 248 days to re-run the test.
Anyhow, methinks a 787 version 1.0 probably flies better if you reboot it first.