[drupalImage] Image resize, Image with text wrapped shown correctly on front end and not correctly shown in backend

Hi Wim, this would be so great if image resize feature was included by default. Thank you for an amazing work you do.

This is the screenshot of the js error i see when i inspect editor.

I will include my code here for now, while figuring out how to add my code as a merge request to the issue you posted above.

ckeditor5_img_resize.ckeditor5.yml

ckeditor5_img_resize_imageResize:
  ckeditor5:
    plugins:
      - image.ImageResize
  drupal:
    label: Image
    library: ckeditor5/drupal.ckeditor5.image
    elements:
      - <img src alt data-entity-uuid data-entity-type height width>
    conditions:
      toolbarItem: uploadImage
      imageUploadStatus: true

ckeditor5_img_resize.libraries.yml

ckeditor5_img_resize:
  remote: https://github.com/ckeditor/ckeditor5
  version: "31.0.0"
  license:
    name: GNU-GPL-2.0-or-later
    url: https://github.com/ckeditor/ckeditor5/blob/master/LICENSE.md
    gpl-compatible: true
  js:
    js/build/image.js: { preprocess: false, minified: true }
  dependencies:
    - ckeditor5/ckeditor5
    - # Loaded in the text format configuration form to provide styling for the icon
# used in toolbar config.
admin.ckeditor5_img_resize:
  css:
    theme:
      css/ckeditor5_img_resize.admin.css: { }

Wim, I have added a custom module to add image resize plugin. I can add a zip file with the module here.

Also, Image resize feature also working if i edit this file web/modules/contrib/ckeditor5/ckeditor5.ckeditor5.yml by adding
image.ImageResize to the plugins section. Please see screenshot attached. I can make that change and create a merge request for this change. Please see line #368

I uninstalled all the other ckeditor5 custom plugins I have created and only enabled ckeditor5 image.ImageResize.

There is a new js error

Updates:
I had those js errors, because i had named my plugin module incorrectly. I guess there was a conflict the way plugin was named and plugin's libraries. I have updated those and js errors are gone. Console is clear.

Image resize is still working the way i described in this issue.

Wim, I have added merge request here https://www.drupal.org/project/ckeditor5/issues/3224652
Please let me know if I did what you asked me.
In my local I have created custom plugin modules to make ImageResize work.
In merge request I have updated contrib ckeditor5 module ckeditor5.yml file to add a new plugins

When image is resized, style width of the figure element has style="width:##%px" if inspect element and remove px, image size is showing correctly in the ckeditor backend

I figured for the imageResize to work in the backend (edit mode), "optional" config.image.resizeUnit needs to be set to 'px'
if set to '%', which suppose to be a default, it still not working in the backend.

I tried to still set config.image.resizeUnit to '%', in backend it still not working correctly, it is adding %px to the percent number for the style width attribute.

It is working with config.image.resizeUnit set to 'px', which is a good news