So the cloak tells us that certain bonuses are gained when a player is stationary.

What exactly constitutes stationary ? Is it if you havent done a move action during your turn or does it mean that you cant have made a dodge test during your round (seems hard to do as stationary) and does it mean you cant be involved in melee combat and still be stationary ?

I would assume so, personally treat it as something like concealed (but without needing an action to activate), easy to disrupt, but if you do practically nothing, you get the bonus