diff --git a/lib/redmine/wiki_formatting/macros.rb b/lib/redmine/wiki_formatting/macros.rb
index 0727d6e265..5d39ab7baa 100644
--- a/lib/redmine/wiki_formatting/macros.rb
+++ b/lib/redmine/wiki_formatting/macros.rb
@@ -278,8 +278,10 @@ module Redmine
 
         size = size.to_i
         size = 200 unless size > 0
-        if obj && obj.respond_to?(:attachments) &&
-             attachment = Attachment.latest_attach(obj.attachments, filename)
+
+        attachments = obj.attachments if obj && obj.respond_to?(:attachments)
+        attachments = (attachments.to_a + @attachments).compact if (controller_name == 'previews' || action_name == 'preview') && @attachments.present?
+        if attachments.present? && (attachment = Attachment.latest_attach(attachments, filename))
           title = options[:title] || attachment.title
           thumbnail_url =
             url_for(:controller => 'attachments', :action => 'thumbnail',
diff --git a/test/functional/previews_controller_test.rb b/test/functional/previews_controller_test.rb
index aa282f3645..c869af57b3 100644
--- a/test/functional/previews_controller_test.rb
+++ b/test/functional/previews_controller_test.rb
@@ -88,6 +88,25 @@ class PreviewsControllerTest < Redmine::ControllerTest
     assert_select 'a.attachment', :text => 'foo.bar'
   end
 
+  def test_preview_issue_notes_should_view_thumbnail_of_the_file_after_attachment
+    attachment = Attachment.generate!(filename: 'foo.bar', digest: 'd')
+    attachment.update(container: nil)
+
+    @request.session[:user_id] = 2
+    post(
+      :issue,
+      params: {
+        project_id: '1',
+        issue_id: 1,
+        field: 'notes',
+        text: '{{thumbnail(foo.bar)}}',
+        attachments: {'1': { token: attachment.token }}
+      }
+    )
+    assert_response :success
+    assert_select 'a.thumbnail[title=?]', 'foo.bar'
+  end
+
   def test_preview_new_news
     get(
       :news,