How should I correctly use Shift mode when prepending messages in VList?

[masteine]

Hi, thanks for the great library!

I'm building a chat interface using VList, and I'm running into a significant issue with shift mode when prepending older messages.

I've followed the guidance in the documentation, but my setup is a bit more complex, and I have more renders happening due to the architecture of my app. Because of that, I'm not sure exactly when and how I should toggle shift (i.e., setting it to true or false).

Could you please clarify the correct way to use shift? Any explanation or working examples would be greatly appreciated!

Thanks again!