When you make a project with many panels, it would take time to expand all panels.
And, you need to expand all panels which you want to save to PDF.
It would be helpful if you could save a project to PDF with an option like "Save with all panels expanded (without depending on the current expansion status of each panel."
Thanks for the suggestion - we will consider it. In the meantime, there is a right-click option on the any panel header that says "Expand All Panels" that I believe does what you're looking for.