When you use an Acquia DAM image style on an image in the WYSIWYG editor in Drupal 10, the image style does not apply to the image. This issue occurs because the Acquia CMS DAM embedded media template, also referred to as the Site Studio template, forces a specific image style regardless of the image style selected in the WYSIWYG editor.
To resolve this issue:

1. Log in to the application as an administrator.
2. Click Administration > Site Studio > Templates > Content Templates > Media.
3. Expand the DAM - Media accordion and locate Embedded (Media, Image).
4. Click the Edit menu corresponding to Embedded (Media, Image).
5. Click the Reset button in the Edit menu.

6. Open

   
7. Click the Reset button in the resulting message box.

8. Open

   
9. Click Configuration > Content authoring > Text formats and editors.
   Alternatively, append /admin/config/content/formats to your application name.
10. Save all the text editor formats:
    1. Filtered HTML
    2. Full HTML
    3. Site Studio
11. Visit the content page and verify the image styles.