WPSP stopped cache after adding a new comment

I have Chrome, where I am logged in as Admin and Firefox, where I am a unknown user (visitor). Clean cache in Firefox and WPSP.
In Firefox I go to my homepage of my site – mysite.com and see what WPSP cached this page (create html and gz). After I go to the post – mysite.com/2015/10/08/newpost/ and add new comment. And see what WPSP create file mysite.com/2015/10/08/newpost/.needs-rebuild in cache folder. After this If I try to go to the any page of my site, WPSP don’t create any cache files. Even after garbage collection clean all cache, In cache directory not created any files. In logs I see lines like this:

18:15:40 512 /category/ukhardcore/ wp_cache_get_cookies_values: cached: a0bc4220084a5b2a788e183774894f3d
18:15:40 512 /category/ukhardcore/ Not caching for known user.
18:15:40 512 /category/ukhardcore/ Cache is not enabled. Sending buffer to browser.
18:15:40 512 /category/ukhardcore/ wp_cache_maybe_dynamic: returned $buffer
18:15:40 512 /category/ukhardcore/ wp_cache_shutdown_callback: collecting meta data.
18:15:40 512 /category/ukhardcore/ Did not write meta file: wp-cache-5c57bbb36c95c70a44dc210861bd104c.php ** *1* *1*
18:15:43 512 /category/ukhardcore/ wp_cache_get_cookies_values: /^wp-postpass|^comment_author_|^wordpress_logged_in_/ Cookie detected: comment_author_1ce384e1af98125d5df0673485f03a1c
18:15:43 512 /category/ukhardcore/ wp_cache_get_cookies_values: /^wp-postpass|^comment_author_|^wordpress_logged_in_/ Cookie detected: comment_author_email_1ce384e1af98125d5df0673485f03a1c

Full log here – Link

Main settings:
cache timeout 300
Scheduler 120
Enabled – Do not cache pages for known users
Enabled – Cache Rebuild
Enabled – Refresh the page after adding a new comment

If I am a new visitor on other browser, why WPSP think what I am a known user?

https://wordpress.org/plugins/wp-super-cache/