Why does one of my favourites have a different name to the blog post or knowledge entry?

Blog posts and knowledge entries can be edited after they are created, each edit creating a new version. When you favourite a post or entry the name of the favourite is taken from the version that is currently published. If the name of the post or entry is changed in an edit then the name of the favourite will stay the same.

If you want to update the name then unfavourite the post or entry and then favourite it again.