world.watch() fails to render (sometimes)

[levinkhho]

In a notebook cell, I ran

world.watch()

When I ran this on my macbook, the cell outputted this text:

Image(value=b'\xff\xd8\xff\xe0\x00\x10JFIF\x00\x01\x01\x00\x00\x01\x00\x01\x00\x00\xff\xdb\x00C\x00\x08\x06\x0…

When I run this in CoLab, the image of the world renders, and updates, correctly. However, when I press "Mirror output in tab" to show that cell in a side window (so that it keeps showing as I scroll through the notebook), the cell in that side window also outputs the above text.

I expected the image to render in all three contexts.