As far as I am aware, all designs have spring tension on that part, some more than others. It has to be that way for the trigger to reset after firing.
it would have to have force on the sear to move down. The #11 as you describe it is under spring pressure and needs something pushing down on it to move when the trigger is pulled. Pulling the trigger releases the blocking pressure from #6 and #7, but the spring pressure, #10, still must be overcome.
The reason I asked this question; while doing some research on this subject, in at least 2 places, the statement "When pulling the trigger the Firing Pin Block should fall" was made.
Now the context in which this statement was made, led me to believe it would/should "Free Fall", thus the question.
I feel very fortunate that I am able to have questions/thoughts/ideas.......confirmed/denied/disputed, on this forum.