Hi @abucknall
My fix seems to work faultlessly, so it is no longer a problem for me. It might bite someone else on the posterior in future. This problem also does not happen all the time, so it is hard to replicate easily.
It re-occurred again after the MCU got into a boot loop and needed to be manually reset and put into boot mode, after which I loaded the firmware again, so it an edge case IMO.
My bigger problem is the inability to create notes with long strings or binary loads. See Problem adding large strings to note requests with C/Zephyr
Regards,
Rob