[UI] 'Server Address' textbox doesn't lost focus

With the 'Server Address' textbox selected in the 'Add Server' screen of the main menu, if you then click the 'Server Name' textbox, the 'Server Address' field doesn't lose focus (the border and blinking caret remain). 

Obviously this is nothing serious, they still function fine, butit's a bug nonetheless.

A screencap of the behaviour in action: