Hi @vvanag,

Got it. Thanks for the additional info.

Try this..

import ipywidgets as widgets
from IPython.display import display

btn = widgets.Button(description="Render HTML")
html = widgets.HTML()

def on_click(_):
    html.value = "OK <b>docs</b>"

btn.on_click(on_click)
display(widgets.VBox([btn, html]))

This avoids mixing Databricks notebook rendering with widget callback output, which is the part most likely failing here. Should initially show Render HTML button when you execute the cell. When you click that, it should show what you are after. This is from my free edition account.

Hope this helps.

If this answer resolves your question, could you mark it as “Accept as Solution”? That helps other users quickly find the correct fix.