Hi DozyWannabe,
The reason for this is that we don't know precisely when they re-appeared, how long they re-appeared for,
the times and modes are here
http://www.bea.aero/docspa/2009/f-cp...nexe.02.en.pdf I hope Airbus changes the FD logic. If the FDs are withdrawn automatically, then they should remain withdrawn until the pilots reselect them.
To have them reappear automatically in a different mode to that which the pilots originally engaged them, can be very confusing.