TanStack / TanStack/virtual

The `smooth` scroll behavior is not fully supported with dynamic size. Error Component Stack

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Dominant language
TypeScript
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Description

Describe the bug

After scrolling with behavior: "smooth" I get the warning:

The smooth scroll behavior is not fully supported with dynamic size. Error Component Stack

What does "not fully supported" mean?
It works fine in Chrome

Your minimal, reproducible example
Steps to reproduce

rowVirtualizer.scrollToIndex(123, { align: "center", behavior: "smooth" });

Expected behavior

no

How often does this bug happen?

None

Screenshots or Videos

No response

Platform
tanstack-virtual version
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.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the rowVirtualizer.scrollToIndex call using align: "center" and behavior: "smooth", then trace how smooth scrolling interacts with dynamic sizing. Reproduce the warning with a minimal example and determine which dynamic-size cases are unsupported; done means the behavior is documented or the reported case no longer warns or fails.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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