I recently found a bug while printing multiple layouts. When using "File > Print", only the selected view tab is printed correctly. All the other layouts are printed as "Wireframe viewport". The fact is all my layouts contains objects that need to be rendered as "Rendered viewport". Actually, the only workaround I've found is printing individually each layout which could be a lot of manipulation (select the layout, then print, repeat x times)
In fact, when the print dialog is opened, in the "View and Output Scale" section, the first dropdownlist shows the selected view tab name. By using this list, if you change the selected view the preview (at the right) already shows the error.
May I also suggess to add the possibility the print multiple layout to separate files. This could be really helpful.