[Ensemble, TextFlow] Missing repaint after 'Hello' string is rotated and translated

1) run EnsembleApp
2) run 'TextFlow' example
3) use 'Hello rotate' slide to rotate 'Hello' string to about 45
4) use 'Hello translateX' slider to translate 'Hello' string it about 82
5) BUG: 'Bold' and 'Hello World' strings to do not redraw properly as you move

I saw this on Mac. Not sure if it happens elsewhere. Does not happen in 8 (but the rotation is a bit different).