Cancel Action not working?

Ya like the topic says the Cancel action hotkey that anet has setup for me doesn't seem to work. I have binded it to several other keys and it doesnt work there either. So I was wondering if I might be doing it wrong?

To make an easy test I simply went to balthazar isle and would use "Signet of Devotion" and hit "shift" during the activation process, and it did not cancel it, I tried holding it down, waiting to tap it an d repeating to tap it. NOTHING seems to work. So i was wondering if you could possibly give me some insight to whats going on

Thanks in advance,
Tim~

Cancel is Esc, shift is supress. Try clicking the ground in front of you with shift down, you wont run to the point you clicked (its to help with clicking targets).

He said he changed the hotkey to other keys, Caelus...

Meh, just move to break the action :/