Another example using the cubic projection. The viewport shows 1x1m tiles. FIRE and the renderer render 1.5m tiles as set in the Override Map.
By the way, the Mirror X and Y check boxes don't result in the texture being mirrored as such, but every second represetation of it. In case one's U or V is pointing in the wrong direction, a plain mirroring would be more useful.
An extension of this bug; when assigning another material (also a Random UVs material) to some objects, their display in the Viewport turns generic. However, FIRE shows they render correctly, and the texture to be displayed from the material (here the d map) has not automagically changed; re-selecting the already correctly selected texture to be displayed updates the Viewport.