Andrew, you are spot on there.
Issue that I reported in another thread
(https://www.thethingsnetwork.org/forum/t/adr-not-working-on-aus915-device-stuck-on-sf12/14891)
was actually reproduced with devices running 1.0.2 regional parameters so it must be some issue on TTN unless there is a way to indicate version of the parameters device is running with and that wasn’t done on the device side so TTN got confused (quite possible).
As you mentioned SF12 and SF11 were introduced for AU915-928. Is it possible that ADR works correctly only if
- Device is running on AU915 pre-1.0.2 parameters.
or
- Device is running on AU923
Has anyone tried ADR on AU923 ?