Cursor remains on screen when moved during loading screen on MacOS.

The cursor remains on screen along with the crosshair when I load into a world after moving my cursor on the Mojang Studios screen.

What I expected to happen was...:
When I load into a world, I thought my cursor would disappear and it would only show the crosshair.

What actually happened was...:
I loaded into the world, and the cursor stayed on screen with the crosshair.

Steps to Reproduce:
1. Load Minecraft on MacOS.
2. Move your cursor during the red Mojang Studios screen.
3. Load a world.