Nested virtual lists

[ssurve]

Is there a recommended way to implement nested virtual lists?
Usecase: directory structure where each nested directory is a virtual list.

I was able to add virtual scrolling to the nested list but noticed that only the specifed number of items (controlled by prop keeps) is rendered. Height is updated correctly but I see empty space where items should be rendered.

Example:

/
  /dir_A
  /dir_B
  /dir_C

If I open dir_B, only 30 items (default keeps value) are rendered. Then there's empty space corresponding to the remaining items in dir_B. dir_C is rendered correctly at the end of the list.