Change record status: 
Project: 
Introduced in branch: 
11.x
Introduced in version: 
11.2.0
Description: 

Previously, it was possible for a comment type to have an empty string in its description field.

langcode: en
status: true
dependencies: {  }
id: comment
label: 'Default comments'
target_entity_type_id: node
description: ''

As of #3455066: Add validation constraints to comment.type.*, this field cannot be an empty string; it will violate config schema. The reason is because an empty string makes no sense for this field. "" is never a useful description.

If you want it to have no description, it must be NULL:

langcode: en
status: true
dependencies: {  }
id: comment
label: 'Default comments'
target_entity_type_id: node
description: NULL
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