If the problem came back that would have to mean something has/was changed and the code below no longer exists in your root htaccess file. Check your root htaccess file code on the htaccess File Editor tab page > Your Current Root htaccess File tab and make sure this code below exists in your root htaccess file.
# Plugin Name Here skip/bypass RewriteCond %{REQUEST_URI} ^/wp-content/plugins/js_composer/ [NC] RewriteRule . - [S=13]
I assume you also added the wp-admin skip/bypass rule for post.php?
# post.php skip/bypass rule RewriteCond %{REQUEST_URI} (post\.php) [NC] RewriteRule . - [S=2]