Made dialog borders not click-through.

game/engines/default/engine/ui/Dialog.lua

@@ -339,6 +339,7 @@ function _M:generate()
 		self.mouse:registerZone(0, 0, gamew, gameh, function(button, x, y, xrel, yrel, bx, by, event) self:mouseEvent(button, x, y, xrel, yrel, bx - self.display_x, by - self.display_y, event) end)
 	else
 		self.mouse:registerZone(0, 0, gamew, gameh, function(button, x, y, xrel, yrel, bx, by, event) if button == "left" and event == "button" then  self.key:triggerVirtual("EXIT") end end)
+		self.mouse:registerZone(self.display_x + self.frame.ox1, self.display_y + self.frame.ox2, self.frame.w, self.frame.h, function(...) self:no_focus() end)
 		self.mouse:registerZone(self.display_x, self.display_y, self.w, self.h, function(...) self:mouseEvent(...) end)
 	end
 	self.key.receiveKey = function(_, ...) self:keyEvent(...) end