Depending on winding order of vertices some AABBs may be calculated with a negative width or height - the current implementation only expects positive numbers so in these cases an AABB with zero width and height may be generated, causing the drawable to be permanently culled from rendering. Current workarounds are to either ensure the first vertex in the drawable's array is the closest to the origin, or to manually disable culling on the drawable.
Depending on winding order of vertices some AABBs may be calculated with a negative width or height - the current implementation only expects positive numbers so in these cases an AABB with zero width and height may be generated, causing the drawable to be permanently culled from rendering. Current workarounds are to either ensure the first vertex in the drawable's array is the closest to the origin, or to manually disable culling on the drawable.