First of all i would like to say that the new TBM 900 quickly became my favourite X-Plane model.
During some of my first flights i noticed a srtange automation behaviour during AP transition from GPS to LOC mode. The LOC becomes active on the HSI however the AP reverts to ROLL mode even with APP armed. If indeed this is a bug you might tike it into consideration during the upcoming updates as it significantly increases workload during complex approaches.
Thank you for constantly improving the product that is already amazing!