Chrome (on Android) address dar doesn't dissapear while scrolling down

Question

For the current version of chrome on Android, when one scrolls down, the address bar auto-hides, making the website full screen. Here's an example:

So when I open SO, this^ is what I see.

Then when I scroll down^, the address bar disappears, as it should (happens for all websites I have seen so far).
But, for this specific website I've designed, such is not the case:

The address bar sticks on top, no matter what.
The link to the website is http://planetkde.org

The website is designed using Bootstrap v3.1. Has anyone faced a similar trouble before? Or is there a specific reason why this might be happening?

Edit: This issue doesn't occur in Firefox for Android (the address bar hides as it is supposed to), just chrome.

Answer 1

Visiting your site immediately showed the problem. And you should have seen it yourself because its on your screenshot :)

Your site is hosted over https but is loading mixed content from http://ovidiu.geekaliens.com/ which is seen as a security warning. The browsers shows this warning in front of the URL in the browser-bar and therefore will not hide automatically.