as title, on J5.0.0 the peagebreak does not work, with purity iv.
the page show only a line, but no page break.
same site, with cassiopeia template, works fine.
You can open file: /templates/ja_purity_iv/html/com_content/article/default.php
Look for this line of code:
<?php echo HTMLHelper::_('content.prepare', $this->item->fulltext); ?>
change it to:
<?php echo HTMLHelper::_('content.prepare', $this->item->text); ?>
soled. many thanks