I recently updated to WP 5.3.1

And now, when I create a new post, it mixes up with previous posts.

Also, when I reload the post list index in the WP admin area, it will not display the last published post until I hit reload a few times.

Something that bothers me a lot is, that when I publish one post, and then create a new one, it will update the last post instead of creating a new one.

This seems to be a cache-related issue, but I am not sure and maybe it is a bug in the new version.

I use the WP Super Cache plugin, but as far as I know, it does not affect the admin area, only the public side of the site.

I asked my hosting provider if they are doing some extra cache, but they are not.

I also recently added Header set Cache-Control "max-age=31536000, public" to my .htaccess file (but I removed that). Do you think that might be causing the problem?

What else might be happening?

  • It can, if you configure it incorrectly. You can also have some caching mechanisms on your server... Dec 18 '19 at 15:27
  • If you're setting cache control headers for pages under wp-admin then your browser will cache those pages, you should stop that or add exclusions
    – Tom J Nowell
    Dec 18 '19 at 15:53
  • @TomJNowell Thanks, I thought it only affects images. It's strange that caches even the post slug and the textarea contents. I will remove it completely and see if that fixes the issue. Dec 18 '19 at 18:10

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