Do you want to request a feature or report a bug?

Bug.

What is the current behavior?

In some cases (can't determine when) Jest "loses" some mocks with multi-project runner and emits weird messages.

You can reproduce by cloning react/react#10273 and running npm test. Many failures are expected but these (about missing files) are not.

What is the expected behavior?

Jest can find mocked modules when running with multi-project runner.

Please provide your exact Jest configuration and mention your Jest, node, yarn/npm version and operating system.

Please use react/react#10273 as a base.