Where to start... I have written to support on a number of occasions about the issues with these particular effects. Call them what you will but they do not work as described, once upon a time they did, or at least Doom did anyway..
I thought if I could start a thread where we could discuss what has happened to you in arena, Gauntlet or otherwise, what did not work as it should? Is there a set of common rules the AI plays by that wrong or right we can all learn and hopefully use to our advantage.
At least that way if these issues continue to fall on deaf ears we can use to our advantage.