[BUG] Formatted text doesn't display properly in ipywidgets

[cameron-toy]

Describe the bug

Formatted text (text contained in $) displays unformatted in ipywidgets on dashboards.

To Reproduce

Create a widget in JupyterLab using ipywidgets and the following code:

import ipywidgets as widgets

slider = widgets.FloatSlider(description='$x$', value=4)
text = widgets.FloatText(disabled=True, description='$x^2$')

def compute(*ignore):
    text.value = str(slider.value ** 2)

slider.observe(compute, 'value')

widgets.VBox([slider, text])

Then, add the widget to a dashboard.

Expected behavior

The displayed widget appears exactly as it does in the notebook.

Screenshots/gifs

Widget in notebook

Widget in dashboard

Context

• OS: macOS 10.15.5
• Browser: Safari 13.1.1
• JupyterLab Version: 2.1.4