Jumping and pressing 6 without use

When I sprint(jump) and press six it has no effect. I tried it in survival but I think it's in creative too.

What I expected to happen:
Select slot 6 in my hotbar.

What happened:
It didn't select slot 6.

Steps to reproduce:
1. Sprint(Jump);
2. While sprinting or jumping select the sixth slot in your hotbar, nothing will happen.