bulkebran Hi
It due to your settings for Layout of template, not from Joomla update.
You set 'ja_stark - Home' as default template style on your site but this style doesn't have 'component' block to show the content so nothing displayed.
As our demo site, we recommend this setup:
1/ Assign 'ja_stark - Home' to special page only (like homepage)
2/ Set 'ja_stark - Default' as default template style and assign default layout for it.
Regards