Focus on any interactive element (such as a button, input field, or link) does not cause any unexpected change in the page's context (e.g. redirection)
Unexpected form submission:
Focusing on this e-mail input field causes the form to be submitted:
Note: Impossible to auto-test (partial auto-testing possible?). Requires a
human tester or AI to visually or programmatically determine if focus on
an element causes a context change.
A partial auto-test could hypothetically be performed by
programmatically checking if
focus eventlisteners are linked to
context-change events such as
window.open('').