View pad getting stuck on xperia SP

The view pad (on the right side) is often getting stuck, when using the movement pad (on the left side)-I'm talking about virtual pads on the screen

What I expected to happen was...:
Being able to use both pads simultaneously

What actually happened was...:
The movement pad was working fine, the view pad was getting stuck

Steps to Reproduce:
1. Move with left pad
2. Try using the right pad
3. Right pad gets stuck after a while