Dilan Melvin T 1bd7be36e0 fix(front): recompute ExpandableList visible chips on resize (#21139)
## Summary

Relation field cells in the record table render their chips through
`ExpandableList`, which measured how many chips fit only once (during
the
children ref pass) and cached the cutoff. It recomputed on item-count
and
hover changes, but never when the cell's available width changed — so a
cell
measured while narrow stayed stuck on that count even after the column
grew
wider. This is the "only ~3 items shown even when the cell is larger"
bug.

This PR adds a `ResizeObserver` on the outer container that resets the
first
hidden child index whenever the available width changes, so the list
reveals
as many chips as fit (and re-trims when narrowed). The outer container
is
observed because its width tracks the available width independently of
how
many chips are currently rendered, which avoids a
measure → trim → shrink → re-measure feedback loop. The observer is
cleaned
up on unmount.

## Test plan

- [x] Added a Storybook interaction test
(`RecomputesVisibleChipsOnResize`)
that renders the list in a narrow container, widens it, and asserts more
      chips become visible.
- [x] Verified the test fails without the fix and passes with it.
- [x] `oxfmt` and `oxlint` pass on the changed files.
- Manual: open a record table with a to-many relation field that has
several
  linked records, widen the column, and confirm more chips appear.

Fixes #12039

---------

Co-authored-by: Charles Bochet <charles@twenty.com>
2026-06-19 13:38:39 +02:00
2026-06-11 11:02:28 +02:00

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