Strange White Rectangle

Where is this? All looks normal to me.

Its usually around the centre of the site and is when someone has uploaded an image. As soon as the “featured image” button is pressed on a post that thing appears.

Nothing obvious when viewing in Firefox 7 or IE9 here either – unless you mean the popup on the site.

No not the popup, I will do the usual thing of get a screenshot when it appears.

Ok here are some screenshots

https://img836.imageshack.us/img836/5622/84674307.png
https://img153.imageshack.us/img153/5767/24534053.png
https://img440.imageshack.us/img440/420/79100970.png

It’s difficult to troubleshoot anything from a screenshot but that does look like something is try (and failing) to launch a popup box to me. Try using Firefox with the Firebug add-on to see if you can gain any clues as to where it’s coming from.

I have this issue also, but it only seems to happen when I am logged into a specific computer of mine, and not on all of them. I get a white rectangle that is shaped a lot like a search box in size and shape, and it basically lays over top the screen in a fixed position while I can scroll everything below it and the white rectangle blocks the content it is in front of…