Mouse buttons not Working

[bernawil]

First, thanks for making this!

I built a keyboard + trackball combo using this. Only problem is mouse clicks don't work (Button 1, Button 2 and Middle Button). X, Y movement and scrolling work great!
I made sure the reports are being sent correctly down the stack. Mouse buttons are the first uint8_t in the 5 length array. But they do nothing.
Same issue with keyboard MOUSE KEYS, they do nothing.

Thanks in advance!