Could you provide us your template flow?

From your question, I can understand these:

1. You have _latest.blade.php inside partials folder
2. Your parent template is include-ing partials/_latest, passing $title variable
3. Your partials/_latest is receiving the variable $title

You can re-check here if you have not : https://laravel.com/docs/5.3/blade#including-sub-views

What I can tell is, you put {{ $title }} in some other files. This is the probable issue you are having. Extra $title variable laying around in unnecessary file.

Try rechecking all your other template file, I am sure there is extra {{ $title }} around. You can check which file has that extra variable by reading carefully the debug message.

Cheers.