After a recent update to X, I discovered that the blog page was no longer displaying blog posts.
The problem appears to be caused by the div container 'x-iso-container' being assigned an inline style of height: 0; which makes all the blog posts disappear.
I can of course override this by adding height: auto !important; to the child stylesheet, but this doesn’t resolve the cause of the problem in the first place. I suspect some JS is adding the style and thought that the following resolution might help (but no joy):
EDIT: Now solved…
