Unexpected blank page between chapters

Haven’t had this happen before. Compiling a novel, each chapter is a folder. In the past, telling it to do a page break before each folder did just that, but now it is producing a blank page between each folder (according to Kindle Previewer). Made no changes to the “Separators” settings in this saved compile. Any ideas as to why this suddenly started happening?
Thanks!
John

I thought it might help if I included some screen scans of the Compile settings. THANKS!
John



Have you played around with the Page Padding for folders?

Sorry just seen this:

viewtopic.php?f=30&t=21964

THANKS! I will check that out.
John