I’m sure you’re replying to the original author of this thread, but …
I’m not using the same theme and this problem isn’t being caused by any plugins. This happened immediately after the most recent update to the WordPress. I haven’t altered any of the original WP files so when WP updates – at least for me – I don’t need to remake any changes.
Switching to the child theme of the template I bought and use still yields the same result as does switching to the Twenty Fifteen theme. All of the plugins I’m using are compatible. Disabling all of them and re-enabling them one by one still results in the same – content does NOT show when viewing, though I am able to (and do have) content entered on the backend.