Browser acceptance against a live scaffold surfaced two defects:
- A fresh observation anchors at the registry's earliest retained byte, so
the client's gap predicate (anchor behind earliest) never fired for it: a
viewer who watched eviction live saw the gap notice, while a reload of the
same activity silently hid that the head was discarded. A fresh view (no
accumulated text) anchored past offset zero now carries the gap mark;
resumes keep their recorded state.
- The trigger-anchored popover (left: 0, width 440px) overflowed the right
viewport edge on narrow windows — max-width alone cannot see the anchor
offset. The open popover now measures its anchor and shifts left to keep
the Menu primitive's 12px viewport margin, re-fitting on window resize and
falling back to the pure CSS anchor when layout reports no width (jsdom).
JobListAction shares the latent overflow; tracked separately.
Yichen Jiang
ddd8baa93a