Pin the yellow "Unpublished Changes" bar so it is visible when scrolling down list

The yellow "Unpublished changes!" warning bar is a great idea in theory, but when list editors scroll down a long list, it quickly disappears from view. We still get huge numbers of lists inadvertently left by academics with unpublished changes (we know this because we run a report every semester to pick them up and query them, and 9/10 of lecturers we contact say they were not still working on the list and just didn't realise they hadn't published).

The yellow warning bar needs to be pinned so that, like the Table of Contents bar, it is always visible at the top of the screen.