If you are creating or updating a Page in an already existing website, remember that the changes you make through the Elementor page editor can affect other Pages. This can happen if the Page uses a Template.
For example, when editing the new Page using the Elementor page editor, if you insert a footer Template and make changes to its font size, spacings, and widgets, the changes will also reflect on all other published pages that use the same footer Template.
After publishing changes to a Page, make sure to also check your other published pages to confirm that only the intended changes reflect in these pages.