diff --git a/test/functional/issues_controller_test.rb b/test/functional/issues_controller_test.rb
index dd85bb5d1..c8418628b 100644
--- a/test/functional/issues_controller_test.rb
+++ b/test/functional/issues_controller_test.rb
@@ -6501,6 +6501,33 @@ class IssuesControllerTest < Redmine::ControllerTest
     assert_select 'input[name=?][value=?]', 'time_entry[comments]', 'this is my comment'
   end
 
+  def test_put_with_spent_time_when_assigned_to_of_private_issue_is_update_at_the_same_time
+    @request.session[:user_id] = 3
+    user = User.find(3)
+    project = Project.find(1)
+    assert_equal 'default', user.roles_for_project(Project.find(1)).first.issues_visibility
+
+    private_issue = Issue.generate!(author: user, is_private: true, project_id: project.id)
+    assert private_issue.visible?(user)
+
+    assert_difference('TimeEntry.count', 1) do
+      put(
+        :update,
+        params: {
+          id: private_issue.id,
+          issue: { assigned_to_id: nil },
+          time_entry: {
+            comments: "add spent time", activity_id: TimeEntryActivity.first.id, hours: 1
+          }
+        }
+      )
+    end
+    assert_select '#errorExplanation', {text: /Log time is invalid/, count: 0}
+    assert_select '#errorExplanation', {text: /Issue is invalid/, count: 0}
+    assert_redirected_to action: 'show', id: private_issue.id
+    assert_not private_issue.reload.visible?(user)
+  end
+
   def test_put_update_should_allow_fixed_version_to_be_set_to_a_subproject
     issue = Issue.find(2)
     @request.session[:user_id] = 2