Audio Crossover from Editor Timeline to Composite Shots

GrayMotion

Just an FYI really.

I noticed that the audio from the editor timeline at times seems to be crossing over to composite shots. I know that this isn't the desired intent.

I've only built a handful of projects and rarely use the Editor timeline so I don't have a current project that has the issues as it seems a restart of the 2017 Pro software seems to cure the problem. 

I was just curious if this has happened to anyone else or just a one time "gremlin"?