\Symfony\Component\Yaml\Parser::parse() returns the unchanged value when a 1-liner string which is no valid YAML is passed. Assume this string to be the page title. Thus the following page will work now:
```
---
This is the title
---
# Example page
{{ meta.title }} is going to be "This is the title" - or "%meta.title%" == "This is the title".
```
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