Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/comment/config/install/core.entity_view_mode.comment.full.yml

@@ -1,8 +1,9 @@
-id: comment.full
-label: 'Full comment'
+langcode: en
 status: false
-cache: true
-targetEntityType: comment
 dependencies:
   module:
     - comment
+id: comment.full
+label: 'Full comment'
+targetEntityType: comment
+cache: true

core/modules/comment/config/install/field.storage.comment.comment_body.yml

@@ -15,3 +15,4 @@ cardinality: 1
 translatable: true
 indexes: {  }
 persist_with_no_fields: true
+custom_storage: false

core/modules/comment/config/install/system.action.comment_publish_action.yml

@@ -1,9 +1,10 @@
-id: comment_publish_action
-label: 'Publish comment'
-status: true
 langcode: en
-type: comment
-plugin: comment_publish_action
+status: true
 dependencies:
   module:
     - comment
+id: comment_publish_action
+label: 'Publish comment'
+type: comment
+plugin: comment_publish_action
+configuration: {  }

core/modules/comment/config/install/system.action.comment_save_action.yml

@@ -1,9 +1,10 @@
-id: comment_save_action
-label: 'Save comment'
-status: true
 langcode: en
-type: comment
-plugin: comment_save_action
+status: true
 dependencies:
   module:
     - comment
+id: comment_save_action
+label: 'Save comment'
+type: comment
+plugin: comment_save_action
+configuration: {  }

core/modules/comment/config/install/system.action.comment_unpublish_action.yml

@@ -1,9 +1,10 @@
-id: comment_unpublish_action
-label: 'Unpublish comment'
-status: true
 langcode: en
-type: comment
-plugin: comment_unpublish_action
+status: true
 dependencies:
   module:
     - comment
+id: comment_unpublish_action
+label: 'Unpublish comment'
+type: comment
+plugin: comment_unpublish_action
+configuration: {  }

core/modules/comment/config/optional/views.view.comments_recent.yml

@@ -3,6 +3,7 @@ status: true
 dependencies:
   module:
     - comment
+    - node
     - user
 id: comments_recent
 label: 'Recent comments'
@@ -235,6 +236,14 @@ display:
           content: 'No comments available.'
           tokenize: false
           plugin_id: text_custom
+      display_extenders: {  }
+    cache_metadata:
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - user.permissions
+      max-age: -1
+      tags: {  }
   block_1:
     display_plugin: block
     id: block_1
@@ -245,3 +254,11 @@ display:
       block_category: 'Lists (Views)'
       allow:
         items_per_page: true
+      display_extenders: {  }
+    cache_metadata:
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - user.permissions
+      max-age: -1
+      tags: {  }