I filed a bug report yesterday. I also alerted the guys on twitter -
Running ver.2017 on a Quad MacPro w/32 gigs of RAM and a 1 gig ATI GPU on El Capitan.
I noticed this yesterday while cutting an audio clip. At first the behavior was only occurring in the Global Waveform view/area and in the Prewire Editor. This morning I'm noticing if you make a large selection in the Editor, the issue persists.
Video is about 40sec. Also, towards the end I drop in two Markers and select the area within the Markers, then delete. Issue persists.
Watch:
http://f-video.s3.amazonaws.com/auudition-WF-BUG.mp4
I have no other graphics issues on my machine (Pro Tools, Logic X, FCPX, etc).
-paul.