Category, Page title and description not showing on google

this is happen on my page and archive page.

This is my page title on page source view
<title>Privacy Policy | myblogtitle</title>

and this is my title looks on google
Privacy Policy – my recent post title from sidebar

What is wrong with my title, is this problem caused by google bot? is google will re-index my page and categories?

https://www.ads-software.com/extend/plugins/all-in-one-seo-pack/