Rich Chiodo

@ttSpace how did you get the nav bar to show up?

Hmm, I have that set but I still don't see nav bars. 

I'm guessing the evaluation options are not passed to pylance (or may not be supported)

I believe these are no longer supported.

@judej do you think the changes here need to be documented?

We actually use a wrapper around [slickGrid ](https://www.npmjs.com/package/slickgrid) (which supports virtualizing columns and rows). Here's our wrapper: https://github.com/microsoft/vscode-jupyter/blob/main/src/datascience-ui/data-explorer/reactSlickGrid.tsx I believe we use fluent-ui styles to make it look like VS...

> do you literally mean a horizontally scrollable million-column grid? Yes this one. Features in data science can be on the order of millions. At least for really complex stuff....

> @rchiodo When you say "in memory" do you mean how many rows have associated elements rendered in the DOM, or something else? I may be wrong, but the canvas...

Do we perhaps cache the sys path somewhere (and it needs to be cleaned)? This is working fine for me with the same setup. 

@zocker-160 can you provide the logs as outlined here: https://github.com/microsoft/pylance-release/blob/main/TROUBLESHOOTING.md#filing-an-issue