[Gameplay] Heimer turrets don't fire lasers despite being in range and having full charge

This is a bug that happens constantly if you play enough Heimerdinger, but it's rarely so obvious as it is here so I decided to make a post. Attached is my .webm replay file.

1. drop turrets
2. hit either e or full w
3. turrets charge but do not fire

In the attached .webm the target is just on the edge of normal turret fire range, but well within laser range. They appear to make the animation for firing but don't actually fire. In the end the poor little guys look as frustrated as I am with their little 'charged' indicator lightning bolts hanging around. :(