Home Assistant's MQTT user flow shows no value for set_ca_cert and set_client_cert (a reconfigure pre-fills them from the entry), and refuses a submit without them — found against the pinned 2026.9.3 in a throwaway instance.
Home Assistant's MQTT user flow shows no value for set_ca_cert and set_client_cert (a reconfigure pre-fills them from the entry), and refuses a submit without them — found against the pinned 2026.9.3 in a throwaway instance.