Hello to everyone,
I have a similar problem with speed. It happened to me a few times on the final app at 2000ft that autothrottle was on, but speed started to go down to the minimum so I had to disengage the autopilot.
I also have 3 more issues that I am looking for the answer on the forum.
1. When I start to descend on managed mode suddenly plane goes down to VS 10000 ft/min same with the climb sometimes reaching 8000ft/min.
2. DEF mode like cold and dark doesn't save so I start the sim always with engines on.
3. During night flight MCDU, when I pressed shift+2, isn't illuminated is just normal colors like during the day.
Thank you, guys.