If u change the type of the command block within the command, the command will wont work ;(

Put the summary of the bug you're having here

What I expected to happen was...:
the command should work when u change the type of the command block

What actually happened was...:
the command in the command block didnt work

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...