Kerbal Space Program

Formerly, fairings and service bays and cargo bays would shield separate craft within them from aerodynamic forces and heat.

This behaviour allowed
1) recovery of loose parts and Kerbals https://forum.kerbalspaceprogram.com/index.php?/topic/189118-*/ https://forum.kerbalspaceprogram.com/index.php?/topic/189118-*
2) and better efficiency in stock propeller craft https://forum.kerbalspaceprogram.com/index.php?/topic/98700-*/ https://forum.kerbalspaceprogram.com/index.php?/topic/145341-*/ https://forum.kerbalspaceprogram.com/index.php?/topic/98700-* https://forum.kerbalspaceprogram.com/index.php?/topic/145341-*

This shielding was lost sometime between 1.7.3 and 1.10.1, reported on the forum at https://forum.kerbalspaceprogram.com/index.php?/topic/196224-*