Issue with key input on build 2015101801 on Arch Linux

I used the original build of Unity on Linux and everything worked fine, but I updated today to build #2015101801
on Arch Linux, and I'm having issues with player movement now.

I've created a new project, created a new Cube, and attached this script to it:

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Player : MonoBehaviour {
5.         void Update () {
6.             if (Input.GetKeyUp(KeyCode.UpArrow)) {
7.                 Debug.Log("Up");
8.                 transform.position = new Vector3(transform.position.x + 1f, 0f, 0f);
9.             }
10.         }
11. }
12.  

Two issues happen. First, if "Maximize on Play" is not selected, focus is lost from the Game view after each key press.

Second, I have to hit the arrow keys many times (up to 30 seconds in some cases), to get any movement on the screen.

 

Im having a similar issue. Anybody?

 

Can any Unity developers repro this issue?