Same here.
Editing the route results in a freeze although the a/c continues to fly (uncontrolled). The displayed attitude is different from the real one. I had this also with v.1.0.
What did I do? I added waypoints for the STAR assigned by ATC manually because I could NOT select it from the database as I could not scroll further down to the end of the list. FD button is the only button which can switched on and off on the MCP.
BTW, some other issues, at least on my system (2020 + updated):
The taxi speed on idle (!) is way too high for a fully loaded A359, you have to break hard to come to a stop.
Becoming airborne the aircraft always veers slightly to the right and has a tendency to become unstable when correcting. So far I was able to only complete 1 flight, too bad!