Problem with webpage name when using this empty element

[abhishekk2604]

I was learning Html document when this happened.

The empty tag-
<meta name="viewport" content="width=device-width">
Seems to make some issues with the webpage name which goes under title element.
The webpage name just goes Untitled when i use this tag.
Can someone tell me why?

[meyshad]

Add a viewport <meta> tag with the appropriate key-value pairs to the <head> of your page:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
  </head>

[developer77android-cpu]

I realize this was four years ago however it is a part of what makes our projects..responsive !! Required info def.