Sometimes if you have other browser windows open your browser can lose track of the parent window's location so when the popup sends the Refresh command it cannot determine which window to refresh and therefore leaves the blue screen up to indicate the command was not properly completed.  Note that your changes are always saved, and this is merely an issue with your browser not refreshing the bottom window automatically. 

However if you have restarted your computer and the problem is still occurring, it may be due to Spyware running on your computer. You might try using our system on another computer to find out if the problem is isolated to your computer. If both computers have the problem, please let us know.  If you do not have this problem on the second computer, we recommend running anti-spyware programs like Spybot SD or AdAware (both are free) to scan your computer to detect spyware that may be adversely affecting your internet browsing of secure web sites.