I shot my bow and arrow and switched to something else really fast and it gave me a inc sac

I shot my bow and switched really fast while shooting and it gave me an inc sac

What I expected to happen was my arrow not to shoot

What actually happened was I shot my bow and it gave me an inc sac

Steps to Reproduce:
1. Aim bow
2. Let go to shoot but switch to something else in inventory really fast
3. And you will have an inc sac but do it fast