Change record status: 
Project: 
Introduced in branch: 
8.5.x
Introduced in version: 
8.5.0
Description: 

The processed property on text fields was marked non-internal and its implementation was fixed to ensure it carried the cacheability metadata of the processed text (i.e. after passing the user-entered text through the filters of a Text Format).

The consequences for REST module's responses (in all formats: json, xml and hal_json):

Before
[
  'value' => 'The name "llama" was adopted by European settlers from native Peruvians.',
  'format' => 'plain_text',
],
After
[
  'value' => 'The name "llama" was adopted by European settlers from native Peruvians.',
  'format' => 'plain_text',
  'processed' => "<p>The name &quot;llama&quot; was adopted by European settlers from native Peruvians.</p>\n",
],
Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done