Apparently it's not a bug but a feature.
According to the relevant help pages:
Quote:
|
Periodicals such as newspapers, magazines, and blogs, and personal documents cannot be viewed on Kindle for iPhone.
|
(from
here)
and
Quote:
|
Blogs, periodicals and personal documents cannot be viewed on Kindle Cloud Reader.
|
(from
here)
So, it looks like we're limited to sideloading using dodgy tools like DiskAid and the like.
What a shame.