Shape does not appear in even-numbered displays

[hainm]

From @lan496

Shape does not appear in even-numbered displays

When I add a shape to NGLWidget, it appears at first. However, it sometimes does not appear in code blocks (see the below screenshot). Is it expected behavior?

Apologies in advance if this is an already-answered question in previous Q&As.

Screenshot

Code

import nglview
from ase import Atoms
print(nglview.__version__)
positions=[(0, 0, 0), (4, 0, 0)]
co = Atoms('H2', positions)
view = nglview.show_ase(co)
view.shape.add_cylinder(positions[0], positions[1], [1, 0, 0], 0.1)
print(view._ngl_component_names)
view  # first

print(view._ngl_component_names)
view  # second: cylinder disapears

print(view._ngl_component_names)
view  # third: cylinder shows again