JS error in the mesh plugin when displaying sample mesh

[podlipensky]

While running TB with mesh demo app summaries, an error is shown in Chrome browser:

(index):29587 Uncaught TypeError: Cannot read property 'forEach' of undefined
    at b._createPointCloud ((index):29587)
    at b._createGeometry ((index):29586)
    at b.updateScene ((index):29585)
    at HTMLElement._updateScene ((index):29639)
    at HTMLElement._complexObserverEffect ((index):1595)
    at HTMLElement._effectEffects ((index):1589)
    at HTMLElement._propertySetter ((index):1589)
    at HTMLElement.__setProperty ((index):1589)
    at HTMLElement._computeEffect ((index):1595)
    at HTMLElement._effectEffects ((index):1589)