Drupal can track asset libraries included on a page, but it does not track single files included by libraries on a page. Therefore different asset libraries must never use the same file. If they do so, the ordering of asset files through weight, SMACSS layer and dependencies is bypassed.
Currently drupal.dialog and drupal.autocomplete declare the same files. This causes ordering issues, especially with CSS, where the ordering of files is used for overruling styles.
Refactor drupal.dialog and drupal.autocomplete into three libraries: Move all shared files from autocomplete and dialog into a new library drupal.jqueryui-shared and depend on the new library. This way ordering will remain intact, even if one of the libraries is added later on though Ajax.
Closed: duplicate
11.0 🔥
Should have checked git first :/
Already fixed in https://www.drupal.org/project/drupal/issues/3387382 🐛 Different asset libraries must not use the same files (dialog & autocomplete) Closed: duplicate