Thank you - I do use them grouped outside of Roon and don’t want to have to group and ungroup them constantly, so please keep me posted.
I’d read somewhere once that if you group them in Roon without grouping them in HomeKit, you have to manually tweak the DSP settings to get the stereo effect. After some testing, this appears to be true - pairing them in Roon doesn’t pair them in stereo. Before the update, Roon was able to pass through the stereo pairing from HomeKit. Thank you for investigating.