views stopped counting

Are you using any caching plugin? The plugin was not updated since 2 months ago so I am not sure why it will break.

It still works on my website on 4.4.2 https://lesterchan.net/blog/2016/02/05/synology-diskstation-ds216/ refresh the page and the view count +1.

It also works on the default theme with 4.4.2 https://lesterchan.net/wordpress_dev/2016/02/04/test-ratings-3/ refresh the page and the view count +1.

So it is likely something on your end, I’m 100% sure.

yes! that’s what the problem.
i just recently chanched cache plugin.
i’ve started to using hypercache. not sure that the previous cache plugin was working…
anyway. is there a cure for this situation?

Nope, the plugin views will be cached on the HTML until the cache is expired. That is how it works.

so for good work i need to delete cache plugin?

Yeap. and ensure WP_CACHE is set back to false in your wp-config.php