Filter not working in WordPress Posts?

Question

WordPress

I go into the posts, and we see such a picture

Then I select a category I

click on the filter, and after refreshing the page the picture is the

following filter.

Answer 1

Hello
1) try updating the VP to the latest version, if you have the latest version, then try reinstalling it from the update console. I hope that you have the original copy of the WP (downloaded from the official WP repository), and not a modified copy that is offered on the network ...
2) most likely you have a plugin conflict, which is why you are seeing the following problem. Try disabling all plugins and check. Then enable the plugins one by one and check the filter every time. One of the plugins can be the hero of the occasion...
3) And of course, turn off the theme, turn on the default one and check the filter again. Maybe a certain script has been added to the theme through function.php, which "affects" the filter's operation...