"Request timed out" overlay is not hidden on subsequent requests

"Request timed out" ui is still not reliably hidden for subsequent requests. Sometimes it appears to be properly hidden but with enough clicking of quickmod ok button I managed to arrive at a situation where the "request timed out" box remained visible and would not go away as subsequent actions are loaded.

It looks like the "request timed out" box might be cleared on a successful completion of a request. Which means if a request fails, and another request is made, the ui starts off with displaying the "request timed out" box which might subsequently get taken out.

What should happen is when a request is made the box should be hidden.

See http://tracker.phpbb.com/browse/PHPBB3-10803 for keeping the box around long enough for user to read it.