TableVirtuoso only renders the first row in Playwright tests

[RapidOwl]

Describe the bug

We are using TableVirtuoso with Tanstack Query for infinite scrolling. We're testing with Playwright. We ran into a strange bug where TableVirtuoso is only rendering the first row of a table.

These tests run fine locally on Mac OS.

If I comment out totalCount in TableVirtuoso the tests also pass on Github Actions.

Reproduction

I don't have a way of sharing our internal systems.

To Reproduce

1. Create an infinite scrolling table with TableVirtuoso and Tanstack Query.
2. Mock the API calls that return the data.
3. Write test in Playwright to verify the initial state of the data (in our case, Playwright's default viewport only allows for ten rows at a time).
4. Run the test in a GitHub action.

Expected behavior

The table to render fully.

Desktop (please complete the following information):

• OS: Ubuntu Linux Github Action (running Playwright)
• Browser: Chromium 128.0.6613.18

Additional context

Can anyone think of any situation where TableVirtuoso would only render the first row of a table? Why would not using totalCount cause the table to render correctly?