Bounded offline artifact · pinned local Floating UI 1.8.0 · zero runtime network
Overlay ownership matrix
Replay seven fixtures through measured native CSS and Floating UI paths, then inspect independent overflow, updates, cleanup, and capability boundaries.
Matched fixture
Floating UI middleware result
Native CSS measured result
The visible surface demonstrates geometry only. The anchor remains a normal keyboard-focusable control; the positioning path does not manage focus.
Receipt
CSS detected—
Placement—
Max overflow—
Live updaters—
Truth boundary: results describe this browser and these bounded fixtures. Positioning does not supply tooltip, menu, combobox, popover, or modal semantics.