In drupal 8, I try to resize uploaded images via ckeditor. Images are not resizing when uploaded via the ckeditor. How to resize inline-image with ckeditor in drupal 8 ?

There is an option in the "Text format" to resize "scale down" the image. But this setting does nothing ? any tips ?

[The Drupal "FULL HTML" text format settings](http://i.stack.imgur.com/KoBnk.png)