I put a pylon for player 161 and...I could still click it. Even when i created an observer i owned and removed it Player 161's pylon STILL didn't become cloaked...
Read DK's tutorial.
I know you are doing something wrong it's quite obvious.
You need an observer for player 161 form the begining.
Umm....where is DK's tutorial? Is it in the thread in the "concepts" forum?
Player 161 doesn't cloak all the time. I think you have to place it a certain way before it cloaks or something. BTW never have vision from the start of the game. Always use triggers to create a unit beside it(observer).
Deaht you should investigate WHEN it works. Is it like p14 that have something to do with order placement.
I have no clue... but right now I've got other things to attend.