Where: First-plausible path on /demo-app/account-settings: the persona saved after choosing the first reasonable-looking email field.
Why: This persona clicks the first plausible control and does not retry. Billing email and the vague save action looked good enough, so they stopped before finding the exact path to "Email updated successfully".
Where: Validation recovery on blank: invalid input and back navigation left the flow off the success path.
Why: This persona intentionally tries invalid input, changes direction, and uses back navigation. The flow did not recover clearly from that edge-case path, so it never reached "Email updated successfully".
Where: Email fields on /demo-app/account-settings: Account email and Billing email were easy to confuse.
Why: This persona needs literal labels. The Account email versus Billing email distinction was too subtle, so they chose the wrong email field and never reached "Email updated successfully".
Where: Mobile viewport on /demo-app/account-settings: the visible field was reachable, but the save/update action was not an obvious touch target.
Why: On the 390x844 mobile viewport, this persona uses only obvious visible touch targets. The account email field was reachable, but the save/update action was not visible enough to complete the confirmation "Email updated successfully".