PLEASE FILL THIS OUT IF YOU WANT HELP WITH AN ISSUE! Bug, feature request, or proposal: What is the current behavior? What is the expected behavior? What are the steps to reproduce? Providing a StackBlitz reproduction is the best way to share your issue. StackBlitz starter: https://goo.gl/wwnhMV What is the use-case or motivation for changing an existing behavior? Which versions of Angular, Material, OS, TypeScript, browsers are affected? Is there anything else I should know?