morethanwords/tweb/claude/story-viewer-not-opening-owlr57 • 4954a9c • 3 files, +98/-5
Fix the stories list not opening the viewer in Firefox

The stories row mounts folded and is only ever unfolded by the wheel handler in
useCollapsable, which read the direction off `wheelDeltaY`. That property is a
non-standard WebKit/Blink leftover Firefox has never implemented, so there it
came back `undefined`, `-wheelDeltaY` was NaN, and `NaN < 0` resolved every
wheel to STATE_FOLDED — including the guard right below it, which then saw no
state change and returned. The row could not be expanded at all, and a folded
one carries `disable-hover` (`pointer-events: none !important`), so clicking a
story did nothing and the viewer never opened. It reads `deltaY` now: the
standard equivalent, same sign, and the sign is all onMove takes from it. The
profile avatar carousel uses the same hook and was collapsed the same way.

Reproducing this also turned up the segments-folded memo being declared after
the element that renders the items: building it maps `peers()` through `Item`
straight away, so a list whose provider already holds its peers read the memo
inside its temporal dead zone and threw instead of rendering a single item. No
current call site constructs it that way — both pass their peers in later — so
the declaration just moves up above the element.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SNLQh1QbfpPyLmQk9vhECq

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