PDF export uses very small font for certain page titles

Issue Summary

When we have a space will multiple pages in different levels, pages in certain levels will have their titles printed in a very small font in the PDF export.

Steps to Reproduce

1. Create a page tree with the following structure:
   • Page 1
     • Page 2
       • Page 3
         • Page 4
           • Page 5
             • Page 6
2. Export the space to PDF

Expected Results

Pages should have their titles printed with a consistent font, or at least not a very small one.

Actual Results

In my example, the page at the 5th level will have its title printed/ exported with a small font:

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available