UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Steps to reproduce the problem:
1. Go to a pdf site like :https://assets.thermofisher.com/TFS-Assets/LSG/manuals/petsumo_man.pdf

2. Scroll down
3. Blank page

What is the expected behavior?
Shows pdf pages

What went wrong?
After 3-5 seconds of scrolling, pdf pages is blank. However, the page is back when I go to another tab and come back the pdf page.

Or the problem is gone when I open the pdf file in a new tab.

Did this work before? N/A 

Chrome version: 68.0.3440.106  Channel: stable
OS Version: OS X 10.13.6
Flash Version:
 

Deleted: Screen Shot 2018-08-09 at 4.23.07 AM.png 766 KB

	Screen Shot 2018-08-09 at 4.23.07 AM.png 766 KB View Download