Popup uploading issue in IE9

When trying to upload a file through the popup in IE9 with the flash uploader disabled, the file fails to load. You click the upload button, the file browser comes up to allow you to select a file. You select a file, and the file browser window closes, but the filename field next to the browse button in the popup is blank. You are never actually able to upload the file at all. The integrated one works perfectly fine however.

I was able to replicate this bug with a freshly downloaded copy of ckfinder 2.3 onto a new server using the popup sample that came with the software on Internet Explorer 9 on Windows 7.