This is happening to every field included in a flexible layout, not just radios/selects.
I did hear back from James in support who indicated this is a permanent, known change. While disappointing, I’m pretty sure I can regex my way around it and pull out the original key/name. I don’t like doing that as it seems way too brittle… I guess maybe I could switch to using get_field_object instead of get_sub_field_object(), as it appears that get_field_object still returns the real name value instead of the adjusted name value.
