Duplicated Max-age issue

Hi,

I installed W3 total cache with multisite (subdirectory) on Nginx server. And when I activate cache-control headers, it looks duplicated. Check the below img please:

If I deactivate the W3TC, all of the cache-control headers are removed. How can I fix it?

This is nginx.conf file for W3TC:

# BEGIN W3TC Minify cache
location ~ /wp-content/cache/minify/.*\.js$ {
    types {}
    default_type application/x-javascript;
    expires modified 31536000s;
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    add_header Pragma "public";
    add_header Cache-Control "max-age=31536000, public";
}
location ~ /wp-content/cache/minify/.*\.css$ {
    types {}
    default_type text/css;
    expires modified 31536000s;
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    add_header Pragma "public";
    add_header Cache-Control "max-age=31536000, public";
}
# END W3TC Minify cache
# BEGIN W3TC Page Cache cache
location ~ /wp-content/cache/page_enhanced.*html$ {
    expires modified 3600s;
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    add_header Vary "Accept-Encoding, Cookie";
    add_header Pragma "public";
    add_header Cache-Control "max-age=3600, public";
}
# END W3TC Page Cache cache
# BEGIN W3TC Browser Cache
location ~ \.(css|htc|less|js|js2|js3|js4)$ {
    expires 31536000s;
    etag on;
    if_modified_since exact;
    add_header Pragma "public";
    add_header Cache-Control "max-age=31536000, public";
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    try_files $uri $uri/ $uri.html /index.php?$args;
}
location ~ \.(html|htm|rtf|rtx|svg|txt|xsd|xsl|xml)$ {
    expires 3600s;
    etag on;
    if_modified_since exact;
    add_header Pragma "public";
    add_header Cache-Control "max-age=3600, public";
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    try_files $uri $uri/ $uri.html /index.php?$args;
}
location ~ \.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|webp|json|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|otf|_otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|tif|tiff|ttf|ttc|_ttf|wav|wma|wri|woff|woff2|xla|xls|xlsx|xlt|xlw|zip)$ {
    expires 31536000s;
    etag on;
    if_modified_since exact;
    add_header Pragma "public";
    add_header Cache-Control "max-age=31536000, public";
    add_header X-Powered-By "W3 Total Cache/0.9.7";
    try_files $uri $uri/ $uri.html /index.php?$args;
}
location ~ \.(bmp|class|doc|docx|eot|exe|ico|webp|json|mdb|mpp|otf|_otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|pot|pps|ppt|pptx|svg|svgz|swf|tif|tiff|ttf|ttc|_ttf|wav|wri|woff|woff2|xla|xls|xlsx|xlt|xlw)$ {
    etag off;
    if_modified_since off;
    try_files $uri $uri/ $uri.html /index.php?$args;
}
add_header X-Frame-Options "SAMEORIGIN";
add_header X-XSS-Protection "1; mode=block";
add_header Referrer-Policy "";
# END W3TC Browser Cache
# BEGIN W3TC Minify core
set $w3tc_enc "";
if (-f $request_filename$w3tc_enc) {
    rewrite (.*) $1$w3tc_enc break;
}
rewrite ^/([a-z0-9]+/)?wp-content/cache/minify/ /index.php last;
# END W3TC Minify core
# BEGIN W3TC Page Cache core
set $w3tc_rewrite 1;
if ($request_method = POST) {
    set $w3tc_rewrite 0;
}
if ($query_string != "") {
    set $w3tc_rewrite 0;
}
if ($request_uri !~ \/$) {
    set $w3tc_rewrite 0;
}
if ($http_cookie ~* "(comment_author|wp\-postpass|w3tc_logged_out|wptouch_switch_toggle)") {
    set $w3tc_rewrite 0;
}
if ($http_user_agent ~* "(W3\ Total\ Cache)") {
    set $w3tc_rewrite 0;
}
set $w3tc_preview "";
if ($http_cookie ~* "(w3tc_preview)") {
    set $w3tc_preview _preview;
}
set $w3tc_ssl "";
if ($scheme = https) {
    set $w3tc_ssl _ssl;
}
if ($http_x_forwarded_proto = 'https') {
    set $w3tc_ssl _ssl;
}
set $w3tc_ext "";
if (-f "$document_root/wp-content/cache/page_enhanced/$http_host/$request_uri/_index$w3tc_ssl$w3tc_preview.html") {
    set $w3tc_ext .html;
}
if (-f "$document_root/wp-content/cache/page_enhanced/$http_host/$request_uri/_index$w3tc_ssl$w3tc_preview.xml") {
    set $w3tc_ext .xml;
}
if ($w3tc_ext = "") {
  set $w3tc_rewrite 0;
}
if ($w3tc_rewrite = 1) {
    rewrite .* "/wp-content/cache/page_enhanced/$http_host/$request_uri/_index$w3tc_ssl$w3tc_preview$w3tc_ext" last;
}
# END W3TC Page Cache core

Thank you,
best regards.