I work in the Radio industry and process a lot of songs in readiness for airplay.
Several versions ago, Audition changed the way the Playback behaviour works. As in the attached JPG screenshot, in the Waveform Editor|Scroll Type I choose "Centered"; and enable Auto-scroll when starting playback or recording.
This works as expected in the first half of the file, but not towards the end of the file.
Here's the issue:
When zoomed fully out, I place the play head in (say) the last 15 seconds of the file and start playing.
Then I "Zoom To Selection". The display starts scrolling, but it doesn't match what I'm hearing, and the play head is not in the centre of the screen as it should be.
This does sometimes work correctly if I use the Zoom In (Time) function, but not if I use Zoom To Selection as it used to. Strangely, it's only a problem towards the end of the file.
A bug or "expected behaviour"? Thoughts?
It seems to work consistently here at both ends of a file. You have to bear in mind that hitting 'zoom to selection' without a selection being made will automatically select half of the file, and that hitting it again will halve that selection, and that doing this repeatedly will rapidly get to the point where, even if it is the last few seconds that the cursor is in, scrolling will start - but only when the cursor reaches the half-way point in what's on the screen.
The fact that you're not hearing what you are seeing though is a bit of a clue, and there are a couple of things you should check: firstly that your video driver is up to date (that can make a surprising difference to this sort of behaviour) and secondly, try changing the 'Use hardware acceleration for deawing (restart required)' setting in Preferences>General. If it's enabled, then disable it - and vice versa. Usually this disturbs the display quite a bit when it's set incorrectly, but it's worth checking anyway.