Peter Braun

Same problem here. No solution yet…

I don’t have any of the above plugins.

2 websites, same problem:
One has the WordPress theme is “Newspaper” and I host with Squidix. I’m in Peru.
Other one is hosted with Hostgator.

Same problems with Tor, Google Chrome and Safari.

It only occurs if I click on a link from another website to mine, so if there is a referrer I guess.

This problem is really weird. Can you confirm your plugins? I use the same plugins on both websites.

Here my plugins:

Advanced Spoiler
Aksimet
All in one seo pack
Author image

Bul resize media (inactive)
Clean image filenames
Contact form 7
Custom share buttons with floating sidebar
embed code generator
ewww image optimizer
fancier author box
hypotext
jetpack for wordpress.com
ninja popups
optin forms
pretty link lite
quick adsense
really simple captcha
reduce bounce rate
regenerate thumbnails
remove category URL
Revolution slider
shortcodes ultimate
subscribe to comments reloaded
tagDiv Social Counter
Use Any Font
w3 total cache
wp remote
wp-postratings
wp-postviews
wpbakery visual composer

Do you use any of them, too?

Thanks Lester.

That are very bad news for us, because we use the plugin on 7 different websites and caching is pretty necessary for us.

Is there any way to export the ratings or will we loose all of them?

You mean “JPG/PNG to WebP”? -> No

Only default settings. I just installed the plugin.