I think I have found a repeatable fault in the latest issued verion of Android on my A1. I was watching 4k Dunkirk via my UBP-X800 - wired directly to TV HDMI. The TV was set to a volume of 34. Everytime there was a loud explosion on screen, the sound cut out and the Info Banner apeared across the top of the screen.

Switching the the soundbar for the sound, and not using the TV speaker at all, we saw the same symptoms.

Is this a "Safety Feature"? I have carried out a Soft Reset, but no change.

Simon