I've not flown the aircraft in a while and have come back from the other airbus product to look at the updated version. I have the latest experimental version installed.
This morning, climbing out of Skiathos I found the climb prediction/TC calculation to be wrong/missing. See the attached screenshot which shows the aircraft still climbing to FL340, yet the MCDU believes we are already at that level? Prior to that the T/C was being shown on the MCDU but never on the ND, all that was shown on the ND was the blue climb predication arrow for the currently selected level...
Now cruising at FL340 everything is ticking over nicely.