WordPress 7.2 loads admin scripts and stylesheets individually instead of combining them into large files, for better browser caching, and prefetches resources for the admin screen the user is likely to visit next (Trac #57548).
Don't rely on admin asset concatenation when debugging or ordering admin assets on 7.2; declare dependencies properly.
Images uploaded in the editor are resized and encoded in the browser with wasm-vips, then uploaded; wp_generate_attachment_metadata still fires. Server hooks wp_image_editors, image_memory_limit and image_make_intermediate_size do not fire for these uploads. Editor screens send Document-Isolation-Policy on Chromium 137+.
Disable it with add_filter( 'wp_client_side_media_processing_enabled', '__return_false' ) if your plugin depends on server-side image editors.