Item: 0x083b
Pic: http://www.2shared.com/file/3812811/1351683/glitch.html

You may double click the gate and it will open, BUT when it shuts on its own. It does that.

Probably an itemdesc.cfg graphic entry issue.
Check the object type for it and go to its config elem and verify both graphics are correct? (Assuming youre using the 097 distro's door package)