I might be doing something wrong, but I can't seem to shut off of the autothrottle on the a318-a321 series when on short final. For example, I was decending towards KLAS in an a318 when i shut off auto throttle. All was well until i shut off the auto pilot. For some reason, the auto throttle came back on and would not shut down unless i turned auto pilot back on. Basically there's no way for me to land short of setting the speed to 0, which seems a little odd.
I'm wondering if others have experienced this apparent issue and if so how you were able to workaround. Thanks.