Hi Pete and all,
The problem of changing HDG only happened to me when i changed one STAR that i have previous selected to another one (in this case changing landing rwy) but when i enter new FL's in the cdu CLB, CRZ page it didn't cause any HDG problem with my setup until this days, maybe it will in my next flights. So to avoid this issue until Enico solve that i am using MCP HDG select everytime i need to change something in the CDU...
Best,