Step-level drop-off

Friction shows up at specific steps, not only at the final submit. Step-level drop-off identifies which step is doing the damage — usually the first one that asks for personal data or makes the user weigh an option without enough context.

Build the funnel events explicitly (form_step_n_view, form_step_n_submit) so the drop-off is unambiguous; relying on order-of-page-views is fragile.

How patterns use this KPI

Pattern	How it's instrumented	Why it matters there
Affordance Hijacking	funnel exits immediately after close/cancel/discard/consent steps	Accidental loss and surprise produce local drop-off rather than smooth continuation.
Inside-Out Design	Funnel by task step, setup choice, docs exit, credential step, and test-send or completion event	Inside-out flows leak users at translation moments where internal choices replace task progress.
Journey-Blocking Consent	consent_prompt_view -> accept / reject / manage / close / exit	The interruption is a funnel step and must be measured as one.
Premature Conversion	Multi-step funnel by screen, especially the first step after the CTA	Friction shows up at specific steps, not only at final completion.
Scrolljacking	Funnel by scroll section, snap panel, list batch, or pinned scene	The failure often appears at the specific section where native control is lost.