UserAgent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36

Steps to reproduce the problem:
1. Here I have attached the video
2. 
3. 

What is the expected behavior?
tab not shown properly.

What went wrong?
tab not shown properly.

Did this work before? No 

Chrome version: 49.0.2623.87  Channel: stable
OS Version: 6.3
Flash Version: Shockwave Flash 21.0 r0

Please let me know its valid one bug or not
 

Deleted: chrome-design-issue-windows-Windows 8.1 Pro 64-bit.webm 17.1 MB

chrome-design-issue-windows-Windows 8.1 Pro 64-bit.webm 17.1 MB Download