UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3295.0 Safari/537.36

Steps to reproduce the problem:
1. Record a performance profile
2. Zoom in on the timeline
3. Scrub the cursor over the timeline or flame chart

What is the expected behavior?
The usual rendering.

What went wrong?
Bad flickering (see attached).

Did this work before? Yes 

Chrome version: 65.0.3295.0  Channel: canary
OS Version: OS X 10.12.6
Flash Version:
 

Deleted: Screen Recording.mov 2.3 MB

Screen Recording.mov 2.3 MB Download