Hello,
Recently (within the last 2 weeks) the appearance of the notebook dashboard export got quite ugly.

Consider this notebook dashboard as seen from Databricks:
Databricks-dashboard-view

When exporting it as a file, it shows as this:
file-dashboard-view

Unlike the Databricks view, the content is not stylized.

For comparison, here is the previous version of the export: It's identical to the Databricks view.