HK P30/P30sk Very Quick Question, No Need to Upvote

The P30sk has been on my CCW short list for a while, and I got to handle one the other day. I'm not sure if I'm mis-remembering, but it I think the thumb safety would not engage when the hammer is down. Is this how the mechanism works/is intended?Thanks. via /r/CCW http://ift.tt/29vj069