Forum:Shrink? New Tournament ruling??

Well I heard from several friends who were at the last tournament that Upper deck changed Shrink to not allow it to be activated when an opponent's monster attacks. Basically making it so setting it will really do you no good unless stalling. Is this true? If so its probably the first quick play spell I know that cannot be activated when an opponent attacks/in the dmg step (If it changes atk for the second one.)

So Is it true? (If so I will need to find something new to replace two spells in my deck..with more spells obviously.)