Haml 3.1.2 displays single quotes in FormBuilder#text_ field html escaped. You may see something like that:

David's Chapter

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

Looking at the page's HTML, your field's values will be doubly escaped:

<input ... value="David&amp;#x27;s Chapter" />

Updating Haml to 3.1.5 or newer Show archive.org snapshot will fix it.