Prettify search previews for tabs/tables?

[WilliamDEdwards]

Search previews for tabs are hard to read. They are basically an un-human-readable jumble of text, and highlighting 'leaks':

Idem for tables:

(FWIW, I'm seeing the same for breadcrumbs with https://github.com/mihaigalos/mkdocs-breadcrumbs-plugin, but not sure if that's relevant.)

Is there a built-in way to prettify these search previews?

I did find #4278, but that's not necessarily about these two elements.