Solid – Virtualizing with a container using max-height doesn't show all items when total height is below max-height

Describe the bug

I have a dynamically sized virtual list whose container scroll element has a max-height style. This way, the container should shrink to the full list of items without needing a scrollbar if all of the items can fit below the max-height value.

However, this breaks in Solid. When the total size of the list approaches the max-height or exceeds it, only some of the items are shown.

See this example, where I have 5 items with an initial estimated size of 28px. Then I dynamically update the item size to be 198px. This adds up to a total height of 990px;. In this image, the container has a max-height of 1000px. Despite having enough room to fit everything, only 2 virtual items are returned by the virtualizer:

See reproduction here: https://codesandbox.io/p/devbox/competent-tristan-7467c3

Your minimal, reproducible example

https://codesandbox.io/p/devbox/competent-tristan-7467c3

Steps to reproduce

1. go to https://codesandbox.io/p/devbox/competent-tristan-7467c3
2. See that not all items are drawn

Expected behavior

If the max-height exceeds the total height needed to show all items, all items should be shown.

How often does this bug happen?

Every time

Screenshots or Videos

Platform

OSX Chrome

tanstack-virtual version

3.10.8

TypeScript version

No response

Additional context

No response

Terms & Code of Conduct

• I agree to follow this project's Code of Conduct
• I understand that if my bug cannot be reliable reproduced in a debuggable environment, it will probably not be fixed and this issue may even be closed.

Open the linked CodeSandbox reproduction first and inspect the virtualizer's behavior when five items are resized to 198px inside a container with a 1000px max-height. Trace the Solid integration from that reproduction and verify that all five items are returned and rendered when their total height is below max-height.