I was looking forward to the much-heralded tuner AF improvements. But on my daily drive to work, where normally the tuner re-tunes 3 or 4 times on the way, it didn't re-tune at all, instead just attenuating when the signal level drops to 1 or 2 bars.

The AF indicator light came on as normal (in Radio info), but switching to the AF Debugging info-mode just displayed a "No AF information at present" for the entire (20 minutes) journey. What is going wrong?