Webstorm HTML always auto-complete HTML attributes to lowe-case

This is a problem since Angular 2 allow camelcase attributes but Webstorm always auto-complete it to lowercase.

for example 

<my-custom-component myCustomValue="foo"></my-custom-component>

will auto-complete to 

<my-custom-component mycustomvalue="foo"></my-custom-component>

The same issues with Angular standard directives *ngIf and so on.

Are there any reason for this ?