Steps to reproduce:
- With multiple files upload on Special:UploadWizard, a user skips a required field(s) (or fills out only the field that is the closest to the bottom of the page) - and scrolls to the bottom of the page (so the not-filled required field is out of the view)
- A user clicks on the 'Publish files' - there will be no warning that some required fields need to be filled out and no action.
Adding an additional warning message e.g. "Some required fields are missing" or scrolling to the place(s) where required fields are not filled would improve user experience.