Adding TOC to a blog will result in it showing other blogs headers in blogs view

Issue Summary

When creating a blog post and adding Table of Content macro to it, macro will render correctly and only pull headers from the blog post it was added to.
But if you want to look at blogs overview by clicking on Blog link in Space Navigation pane or look at blogs from a certain month or year using breadcrumbs pane, TOC macro will pull headers from all blogs in space.

Steps to Reproduce

1. Create one or more blog post page and add headers to it
2. Create another blogpost page add some headers to it and add TOC macro
3. Save the blog post and confirm that TOC macro is rendering correctly and pulling headers from your blog
   
4. Click on Blog in the Left Space Navigation pane or click on a Month or Year in top blog breadcrumbs

Expected Results

1. Table of Content macro on each blog is showing headers from the specific blog you are reading

Actual Results

1. Table of Content macro is showing heading from every blog post in the list
   

Workaround

Currently there is no known workaround for this behaviour. A workaround will be added here when available