I have observed that Material Design puts the close icon to the left in all the examples of Material Design. Do you know any case that it goes to the right?
No. If your application is strictly following the material design system, then the "Go Back" and "Close" buttons are placed to the left end of the top bar for LTR languages.
The recommended placement of elements in a top app bar for left-to-right languages is:
- Place navigation on the far left
- Place any titles to the right of navigation