AsyncComponent does not show errorComponent

[wellrus]

Version

3.0.0-rc.11

Reproduction link

https://jsfiddle.net/4srq6c7a/

Steps to reproduce

run jsfiddle example

What is expected?

Display errorComponent if promise rejected.
'error' is visible.

What is actually happening?

errorComponent does not rendered
'loading' is visible.

Text from console:

"[Vue warn]: Unhandled error during execution of async component loader", "
", " at <AsyncComponentWrapper>", "
", " at <App>"

"Error: Async component timed out after 5000ms."

If an error occurs inside the loader, the result is similar