mat-spinner mode="determinate", but it is whirls constantly

#### What is the expected behavior?
mode="determinate", it should be stationary

#### What is the current behavior?
it is whirls constantly

#### What are the steps to reproduce?
https://stackblitz.com/edit/angular-material2-issue-bgjz29

#### Which versions of Angular, Material, OS, TypeScript, browsers are affected?
all latest

#### Is there anything else we should know?
nop