Only call XSetInputFocus if the window is visible

src/api/x11/window.rs

@@ -615,6 +615,7 @@ impl Window {
             input_handler: Mutex::new(XInputEventHandler::new(display, window, ic, window_attrs))
         };
 
+        if window_attrs.visible {
             unsafe {
                 let ref x_window: &XWindow = window.x.borrow();
 
@@ -628,6 +629,7 @@ impl Window {
                     ffi::CurrentTime
                 );
             }
+        }
 
         // returning
         Ok(window)