Problem/Motivation
When image is resized in CKEditor 4, both height and width attributes are added. The attributes persist if the text format is upgraded to use CKEditor 5. Now if user resizes the image, the width attribute is converted to use percentages. In this process, the height is left untouched which may lead into the image rendering with incorrect proportions in some browsers.
Upstream bug: https://github.com/ckeditor/ckeditor5/issues/5154