# Drift — Sidebar `` **Status:** drift — ⚠ drift detected — resolve per `.claude/rules/designbook-propagation.md`. | severity | kind | prop | detail | | --- | --- | --- | --- | | **drift** | prop-missing | `current` | in IR (attribute 'current'), absent on | | **drift** | variant-axis-missing | `current` | IR variant axis 'current' (doc:) has no Lit property. | | info | non-portable | `onNav` | type=function; not attribute-mappable — handle explicitly, never drop. | | info | prop-extra | `activation` | on (attribute 'activation'), not in IR contract. |