Firing does not occur on 6th evil being until very late

Description

When firing at the first evil beings the beam (gun) works just fine. Clicking the fire button numerous times aimed at the 6th evil being produces no shot. The 6th evil being can not be killed until it is very close to going out of view (Past the player).

Steps to Reproduce

1. Start the game (I have reproduced this in different resolutions and qualities)
   
2. Run into the blue objects and shoot the first 5 red objects (Evil beings) clearing them as fast as possible.
   
3. Fire at the 6th evil object from long distance.
   

Actual Results

Firing at the 6th evil being does not produce a shot.

Expected Results

Firing at the 6th evil being should function as expected and should fire a shot.

NOTE:

Try a second reproduction following these steps:

1. Start the game

2. Run into the blue objects and shoot the first 5 red objects (Evil beings) clearing them as fast as possible.

3. Instead of trying to fire at the 6th evil being, this time fire at the blue object. Notice that you CAN get a shot to fire at the blue object.

4. Keep trying to fire, you will notice that there seems to be a 'dead spot' where the gun will not fire at either blue nor red objects.