UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Example URL:
Any.

Steps to reproduce the problem:
This actually happened while I was developing my website locally. So when a page has a title say "500 Internal Server Error" and when it is updated to have no error (but also doesn't have any title), the title of the page shows 500 Internal Server Error instead of showing http://example.com/something (which it shows every time you open a page)

In your development environment: 
1. Open a page having some title.
2. Edit the same page to have no title (via your code) and then refresh (Ctrl+R or F5)
3. You will still see the last title which was seen in Step 1

What is the expected behavior?
After the refresh, the page has no title, so it should be showing URL of the page instead of last working title.

What went wrong?
Displaying updated title after page refresh in case the page has no title.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 63.0.3239.132  Channel: stable
OS Version: 10.0
Flash Version: 

Tested and works fine in Mozilla Firefox 57.0.4