sagews: 3d animations not displayed correctly

[haraldschilly]

this works fine in jupyter, but sagews does this with the new sage 9.2 feature:

code

x, y = var('x, y')

def build_frame(t):
    e = parametric_plot3d([sin(2*x - t), sin(x + t), x], (x, 0, 2*pi), color='red')
    b = parametric_plot3d([cos(x + t), -sin(x - t), x], (x, 0, 2*pi), color='green')
    return e + b

frames = [build_frame(t) for t in (0, pi/32, pi/16, .., 2*pi)]
animate(frames, delay=5).interactive(projection='orthographic')

[williamstein]

WORKAROUND: Use Jupyter.