Hi @Tim_Clegg,
Thank you for your diligence and for the precision of your report! If you have a moment to submit logs, you can find instructions in this Help Center article for accessing them on a Nucleus device.
Here is a link for uploading logs for the tech support and QA teams to review.
If you’re out and about and don’t have a chance to submit, that’s not a problem. The team can also pull an automatic diagnostic report from your account which would contain logs around the time of the crash.