47-55.1 Door interior bracket ?

[51 3600]

Almost too embarrassed to ask this elementary question. Just almost though, cuz I'm still asking. Centered inside the door of my '51 is a bracket which serves as the bottom mount for the vent frame division bar. I can't see but assume it is not attached to the outer door skin, only the inner door skin. But is there supposed to be some sort of rubber pad, glue, caulk, etc. between the bracket and the outer door skin to prevent rattling?

The attached pic is looking down into the door from the interior side of the window opening. (I always enjoy pics like this because it's obvious to the poster what it is, but viewers are often "wth.....?", tilting their head left and right trying to figure out what they're looking at.)