Sometimes, when exporting a session with long blocks, you might notice large empty spaces (page breaks) on your export and/or the content of your blocks flowing over the next page's header.
This is an issue that we are aware of and the fix for it is in the works. In the meantime, there is a workaround that should help you with this if you are using Chrome.
When you head to the export screen, click on the green 'print' button instead of the 'save PDF' button. Then, on the pop up screen, ensure that the 'Headers and Footers' checkbox isn't checked, and the 'destination' is 'Save as PDF'.
With this setup, the blocks within your session on the printout should not be cut off and there shouldn't be any long empty spaces in your session export.
How to fix the title pages overlapping on the export?
The workaround above will help you with this issue as well.