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)
New tab opening:
Focusing on this e-mail input field causes a new tab to open:
Note: Impossible to automatically test or detect (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('').