Bug, feature request, or proposal:
Bug
What is the expected behavior?
Correct tooltip positioning
What is the current behavior?
If you set [matTooltipPosition]="'right'" to a tooltip located in material dialog the hint appears on the left.

What are the steps to reproduce?
https://stackblitz.com/edit/angular-lbnuwq
Which versions of Angular, Material, OS, TypeScript, browsers are affected?
- Windows 10
- Chrome 66 (not a browser related issue - same on Firefox)