Update_Display_Data is not handled by the interactive window or notebook editor

[rchiodo]

Enter code like so:

# %%
import itertools
import time

from IPython.display import Markdown


# %%

dh = display(display_id=True)


# %%
display(Markdown('# Display Update Fun'))
dh.display(Markdown(''))


# %%
for i in itertools.cycle(range(0x1F600, 0x1F650)):
    dh.update(Markdown(f'## &#{i}; {hex(i)}'))
    time.sleep(0.5)

This should cause the second and 3rd cell to update as the timer fires. What actually happens is nothing.

This is a requirement for some of the IPyWidgets to work

[IanMatthewHuff]

Validated.