The function "All" takes a list of Booleans and returns True if they are all true, and false otherwise.

This has been tested on a local fresh install as well, for convenience I provide the function and implementation on Notwikilambda.

The function of All is here ( list: List ) : Boolean
https://notwikilambda.toolforge.org/wiki/ZObject:Z10037

The implementation of All is:
If(Empty(list), true, If(Head(list), All(Tail(list)), false))
https://notwikilambda.toolforge.org/wiki/ZObject:Z10038

Here are a few calls to All:
All([]) (should be true) - https://notwikilambda.toolforge.org/wiki/ZObject:Z10039
All([true]) (should be true) - https://notwikilambda.toolforge.org/wiki/ZObject:Z10040
All([false]) (should be false) - https://notwikilambda.toolforge.org/wiki/ZObject:Z10041
All([true, true]) (should be true) - https://notwikilambda.toolforge.org/wiki/ZObject:Z10042
All([true, false]) (should be false) - https://notwikilambda.toolforge.org/wiki/ZObject:Z10043

They all fail.

My guess is that the recursion in the implementation throws the orchestrator off.