Need to press space twice on external keyboard

[riban]

Hi

The external keyboard sometimes needs the spacebar to be pressed twice for an operation to occur. Example:

• In stop or pause mode, press play button on touch screen to start playback - playback begins
  
• Press space bar on keyboard to pause - nothing happens
  
• Press space bar on keyboard a second time - playback is paused
  

I have only found this behaviour for the spacebar and shift + spacebar. All other keyboard shortcuts (that I tested) do not suffer this problem.