2 form on page, focus working incorrect

example: https://codesandbox.io/s/818ov6pok0

case:
- submit last form

### What is the current behavior?
input in first form get focus

### What is the expected behavior?
input in last form get focus

Reproduce the case from the linked CodeSandbox by placing two forms on a page and submitting the last form. Trace the focus behavior for that submission; done means the first input in the last form receives focus rather than the first form's input.

Written by the indexing model from the issue text.