Allow 2-sided rendering on (Cesium) 3D tiles

Can an option be created to allow 2-sided rendering of the 3D tiles?

Currently when looking from below the ground level, or from within a structure looking outward, the tiles are transparent.
In my opinion there are situations where I do want to see the tiles from the ‘invisible’ side as well. For example when creating a section to judge sight-lines from a higher-level balcony, to view the existing ground level (on greenfield projects) when judging foundation/sewer works, …