The steps to reproduce it are as follows:
1. Create a site
2. Create a blog post and add a tag "test"
3. Create another blog post without tag.
4. Open the blog post which you added the tag.
5. Click the link attached to the tag "test" ( Note that the link is not highlighted as hyperlink)
Only blog with tag "test" is displayed in the list
The blog post without tag "test" is also appearing in the list
This only happens when we click the tag from within the blog post page. If we click the tag from left navigation bar or the list page then it shows the correct result