When the parent container is scaled down (i.e. something like transform: scale(0.4)), the overscan does not work correctly. Rows and columns at the bottom / to the right are not rendered, I suppose because the calculation assumes they are not visible yet.
I have adjusted the example CodeSandbox for this scenario:
https://codesandbox.io/s/amazing-chandrasekhar-wivbo
You can see the issue with the grid:

Is there any recommended way how to configure useVirtual for such cases, or is this simply a bug in the calculation?