@fourfa @srkk
I noticed this myself just now. Kerbals on command seats inside fairings and service bays have drag. Checked "display aero in action menus" and it's there.
I tested inside 1.25 fairings, 2.5 fairings and the same sized service bays. Yup. Draggy lads.
I did a limited test of normal parts inside the fairings etc and they seem to all have no drag as you'd expect.
Just to sanity check I reverted to 1.3.1 and as expected there's no drag on Kerbals in the same test situations
Maybe a bug, maybe by design. No Kerbal sardines for now.