UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36

Steps to reproduce the problem:
1. Go to any page with a fixed element
2. In devtools, inspect any node whose bounding box intersects that fixed element's
3. Cmd-Shift-P, choose "Capture node screenshot"

What is the expected behavior?
Screenshot should only contain that node itself

What went wrong?
Screenshot has a clipped version of the fixed position element occluding the node

Did this work before? N/A 

Chrome version: 66.0.3359.170  Channel: stable
OS Version: OS X 10.13.4
Flash Version: 

"Capture full size screenshot" also plays badly with fixed position elements – they appear in a position relative to the screen size at time of capture (i.e., if you have bottom: 0 then it will be in the middle of the captured screenshot); I would expect them to appear positioned relative to the full image or not at all.