UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

Steps to reproduce the problem:
Problem: Let's say the user has several tabs open,
each showing a different page but on the same domain (Facebook).

Now no matter if the user is currently browsing a Facebook tab or
non-facebook tab, let's say suddenly a Facebook notification appears
momentarily in the lower right corner of his screen.

He clicks it, and indeed gets to see the story the notification is
talking about.

However, did you notice, chromium REUSES one of his arbitrary current
open Facebook tabs. If the user is not wary, he will not realize this,
and when finished reading the new article, will forget to hit the BACK
button to see what he originally was intending to read later in that tab.

What is the expected behavior?
Please have the browser open a NEW tab when clicking on a notification.

What went wrong?
Browser arbitrarily "REUSES" a innocent tab that it finds already opened, assuming that since it is from the same domain it will be OK to open the new page there. 

Did this work before? N/A 

Chrome version: 70.0.3538.110  Channel: stable
OS Version: 
Flash Version: 

If there are no tabs already opened from the same domain, the browser correctly opens a new tab.