Volume rendering of unstructured grid on OS X Sierra

Select the Wavelet source, tetrahedralize it and choose volume rendering. Nothing appears, even when colormap is set to all-opaque. Projected tetras never seems to work; Z sweep works, but is is very slow and image disappears after a while (maybe its working in very slow 'interaction mode', then disappears when it goes out of interactive mode). Bunyk behaves similarly, but interaction is faster.