This is a bug with Facebook. You can read more of the details in their bug report below:
developers.facebook.com/bugs/452585014808810
Basically, for now, they aren't posting to the users Timeline while Facebook reworks the read actions a little bit. I'd highly recommend using the 'Does this repro describe your issue" link on the bug report. The more users that do that, the higher priority this issue will become.
Hope that helps explain, we're hopeful they'll make the news.reads actions appear properly again soon.
Thanks,
Alex