[GAMEPLAY] macOS Sierra Mouse Bug when Alt-Clicking

On macOS Sierra, often when I Alt+Left Click (to ping), especially if i drag during the ping (for the smart pings), the cursor jumps to the center of the screen. Something similar to this happened in El Capitan but it wasn't as bad or as frequent, just causing me to often ping the wrong smart ping instead of affecting my gameplay. It's much worse now as it moves to the center so it takes me a measurable amount of time to bring my cursor back to where i want it or causing me to miss skills since the cursor is not where i expect it to be.

Steps:

1. Load game on macOS Sierra
2. Alt Click or Alt Drag Click to ping/smart ping
3. Notice the mouse will jump to the center of the screen occasionally

I've linked a video of the cursor jumping back to the center when I ping. There is a point where you'll see the mouse not jumping and that's because I'm not holding alt, this seems to only happen with Alt being down.