UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36

Steps to reproduce the problem:
1. Have an existing incognito window, with multiple tabs
2. Open any web page in a normal non-incognito window
3. Right click on some link and choose "open link in incognito window"

What is the expected behavior?
A new incognito window should be created, not a tab in an existing one. 

Multiple windows with multiple tabs are generally a result of semantic grouping by the user, which gets violated when the browser opens a new tab, without the user explicitly requesting it (eg. by middle clicking on link). 

Also, on Linux the pre-existing incognito window can be on a different virtual desktop.

What went wrong?
The link is opened as a new tab in the existing incognito window

Did this work before? No 

Chrome version: 50.0.2661.94  Channel: stable
OS Version: Ubuntu 16.04
Flash Version: Shockwave Flash 21.0 r0