Apache force transfer-encoding chunked after update to version 2.4.62

I'm running Apache with PHP-FPM on a RHEL 9 server. After updating Apache from version 2.4.57 to 2.4.62, all HTTP responses now include the T**ransfer-Encoding: chunked** header, even when the PHP script explicitly sets the Content-Length header. I haven't made any changes to the Apache or PHP configuration files. Here’s a simple PHP script I used to test the response behavior. When I run this on Apache 2.4.57, it works correctly and the response includes the **Content-Length** header. However, the same PHP script on Apache 2.4.62 results in a response with the **Transfer-Encoding: chunked** header instead. true]); header("Content-length: ".strlen($response)); header("Content-type: application/json"); echo($response); ?> Here is my site conf file LoadModule rewrite_module modules/mod_rewrite.so LoadModule status_module modules/mod_status.so Listen 443 ServerAdmin admin@smartySSL.com DocumentRoot /var/www/smarty SSLEngine On SSLOptions +StrictRequire SSLProtocol +TLSv1.2 -TLSv1.1 -TLSv1 -SSLv3 SSLCipherSuite HIGH:!MEDIUM:!LOW:!NULL:!aNULL:!MD5:!RC4 SSLCertificateFile /etc/pki/tls/certs/ca.crt SSLCertificateKeyFile /etc/pki/tls/private/ca.key KeepAliveTimeout 10 SetEnvIf Request_URI ".*" no-gzip SetEnv proxy-sendcl LogLevel proxy:trace6 TraceEnable Off Options -Indexes # Proxy declaration # we must declare a parameter in here (doesn't matter which) or # it'll not register the proxy ahead of time ProxySet disablereuse=off # Note: If you configure php-fpm to use the "pm = ondemand" #then use "ProxySet disablereuse=on" SetHandler proxy:fcgi://php-fpm SetEnv proxy-sendcl 1 LogLevel debug ErrorLog logs/smartySSL.com-error.log LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\" \"%{Connection}i\" %k" my_combined CustomLog logs/smartySSL.com-access.log my_combined Alias /prodTest /var/www/prod_testing_smarty #disabilita il listing Options -Indexes Require ip 127.0.0.1 SetHandler server-status Allow from 127.0.0.1 Allow from ::1 Deny from all Order Allow,Deny Allow from 127.0.0.1 Allow from ::1 ProxyPass unix:/run/php-fpm/www.sock|fcgi://localhost/fpm-status RewriteEngine on RewriteRule ^/TcpWeb/rest/FWUpdate/(v[0-9]+)/([A-Z][0-9]+) /rest/get_fwUpdate.php?version=$1&id=$2&%{QUERY_STRING} [END] RewriteCond %{QUERY_STRING} ^([^&]+) RewriteRule ^/TcpWeb/rest/GetAll/(v[0-9]+)/([A-Z][0-9]+)/?$ /rest/get_all.php?version=$1&id=$2&%{QUERY_STRING} [END] RewriteRule ^/TcpWeb/rest/PutAll/(v[0-9]+)/([A-Z][0-9]+) /rest/put_all.php?version=$1&id=$2 [END] RewriteRule ^/TcpWeb/rest/DiagnosticLog/(v[0-9]+)/([A-Z][0-9]+) /rest/put_diagnosticLog.php?version=$1&id=$2 [END] RewriteCond %{REQUEST_METHOD} ^TRACE RewriteRule .* -[F] I can't use **Transfer-Encoding: chunked** header since is not supported by our embedded devices. Any ideas ? Thanks