Created attachment 28751 [details] test FO file This causes five pages instead of four: <fo:block> <fo:block>page 1</fo:block> <fo:block break-before="page" break-after="page">page 2</fo:block> <fo:block break-before="page" break-after="page">page 3</fo:block> <fo:block>page 4</fo:block> </fo:block> The empty extra page happens between page 2 and page 3.
Created attachment 28752 [details] PDF output of test.fo