UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2803.0 Safari/537.36

Steps to reproduce the problem:
1. Right-click an element on a page that has CSS styles applied to it and click "Inspect This Element"
2. Ensure that the Computed panel is docked inside the Styles panel (either by docking the dev tools to the side, or by making the floating inspector narrow and tall enough to accomplish the same layout)
3. Ensure that the Styles panel is active
4. Attempt to scroll through the list of CSS styles applied to the element, as well as the "computed" sub-panel on the right. 

What is the expected behavior?
Both sections of the Styles panel should scroll correctly.

What went wrong?
Neither panel is able to scroll.

Did this work before? Yes A recent version of Canary

Chrome version: 54.0.2803.0  Channel: canary
OS Version: OS X 10.11.5
Flash Version: Shockwave Flash 22.0 r0

I have my Mac set to always display scroll bars, but neither panel shows any scroll bars and I can't scroll with the trackpad.

Scrolling is fine whenever the Styles and Computed panels are separate tabs.

I have attached an image of the layout that breaks it for me.
 

Deleted: Screen Shot 2016-07-22 at 10.06.19 AM.PNG 136 KB

	Screen Shot 2016-07-22 at 10.06.19 AM.PNG 136 KB View Download