How to fix repeating site title issue in WordPress 4.3?

After upgrading your WordPress blog, are your browser’s titles are looking ugly repeating unnecessarily? This means your theme is not fully compatible with the latest WordPress version. So now question arises that what to do to fix this repeating title issue. First of all, check if your theme has pushed any update, and if yes then update it with the latest version. In case no update is pushed from your theme or even after updating the theme to its latest version, the problem still persists, then that means your theme is not compatible with WordPress 4.1 and above versions. So what to do in this situation is the aim to discuss in this quick tutorial.