Vitest Assets are not accessible when run with `projects`

[herrlegno]

Describe the bug

Vitest screenshots assets are not being exposed correctly, and vitest ui is not able to reach them.

When using projects config to run browser tests, vitest ui shows a broken ref image.

Current Behavior:

Expected Behavior:

Reproduction

I've created a minimal reproduction repo:

• StackBlitz

In this repo in the vitest.config.ts you will see 2 configs:

• The default (uncommented) is the one that fails (current behavior)
• The commented is the one used for expected behavior

Steps:

• download the project to be able to use playwright, as stackblitz does not allow it
• npm ci
• run npm run test
• • remember to delete reference screenshots between runs or the tests will not fail

System Info

System:
    OS: macOS 15.6.1
    CPU: (8) arm64 Apple M3
    Memory: 334.80 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.11.0 - /[REDACTED]/.nvm/versions/node/v24.11.0/bin/node
    npm: 11.6.1 - /[REDACTED]/.nvm/versions/node/v24.11.0/bin/npm
  Browsers:
    Brave Browser: 141.1.83.120
    Safari: 18.6

Used Package Manager

npm

Validations

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• The provided reproduction is a minimal reproducible example of the bug.

[lzl0304]

I tested the fix from #9321 on the latest main build and it resolves the problem for me.

[sheremet-va]

I tested the fix from #9321 on the latest main build and it resolves the problem for me.

Good point, they are caused by the same issue.