You are right, there is a mistake in the latest autopilot panel. I missed this as I usually select the flight modes from my controller. I will issue a bugfix ASAP.
Restarting Windows or even FSX should never be necessary if something in Draken malfunctions, reloading the aircraft (or the flight) should reset everything.
Win 10 Pro | P3D v4.5 | AMD Ryzen 3 3.5 GHz | 32 GB RAM | NVIDIA GT1030 | TM HOTAS Warthog | TM HOTAS Cougar