In Craft 5 the table view has been ditched in favour of the new card view for element indexes in mobile view.

While this is a good UI for channel and single sections, it falls apart when used for structure sections.

Example of a structure in desktop mode and the same structure in mobile:

There is no way to infer the entries' hierarchy, nor a way to sort them in a predictable manner according to that hierarchy.

Some solutions that come to mind:

• Bring back the table view for structures in mobile view.
• Introduce levels of indentation for cards in mobile view (for structures). That would probably require the layout to allow for some horizontal scrolling, depending on the level of indentation. It would also not solve the problem of not being able to collapse/expand nodes in the structure.
• Sort the elements by "structure" order, and display the parent(s), breadcrumb like, on each card, maybe above the title.