Wordpress安装第2步页面空白

Everytime I run a new wordpress 4.1.1 install the first install page works fine: i.stack.imgur.com/31mzE.png

but once I hit "Install WordPress" the next page (myWordpressSite.net/wp-admin/install.php?step=2) shows up like this: i.stack.imgur.com/glAUS.png

If I refresh the page I get this: enter image description here

After that everything works perfect. I'm just wondering If anyone has seen this behavior before, could this be a sign of underlying problems in in my install? Also I am installing wordpress core using composer with this installer.

I just deployed the boilerplate and I got to the same place. It looks like Wordpress is not redirecting to login after the setup completes. If you click "Log In" and login with the username and password you just created it works.

Make sure the php_mysqli extension is enable in php.ini