Touch players are not able to punch the air like the windows 10 players this has been a bug for a very long time and still unfixed and the main reason why touch players can't punch the air because the crossair is missing on the screen the crossair should be visible on the head if you do third person front just like in Windows 10 

Steps to Reproduce

1. Turn on split controls (touch device only)
2. Punch the air

Expected Results 

 Your hand should do a punching animation juwt like in windows 10

Observed Results 

Your hand doesn't perform a punching animation but a punching soumd can be heard