/testfor command is broken

After the 1.19.50 the /testfor comand is no longer working i have tested on my BDS as well as single player worlds and it isn't working at all you can type /testfor on the chatbar and it pops up as an option however if you try to use it nothing happens if you put it into a command block it doesnt provide any output at all 

See attached pictures 

 

There should be an output showing the player found