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d676c832f3
Four React-19-sensitive patterns that pass on React 18 today but break
under React 19 (verified on the in-flight TanStack Start branch).
Landing on master now so the eventual React 19 upgrade is a no-op for
tests, instead of a separate cleanup pass under upgrade pressure.
Each fix is a strict superset / less-fragile equivalent of the existing
pattern, so master (React 18) stays green.
**Changed:**
- `hooks/misc/useStateTransition.ts` — fire on entry into `newTest` from
any state other than `newTest`, instead of requiring exactly `prevTest →
newTest`. React 18+ auto-batches dispatches across awaits (e.g.
`dispatch SUBMIT` in the handler, `dispatch ERROR` in `onError`),
collapsing `editing → submitting → error` into a single render where the
intermediate `submitting` tick is never observed. Strict superset of the
old check for our reducers — `success`/`error` are only reachable from
`submitting`.
- `Support/CategoryAndSeverityInfo.tsx` — guard `onValueChange` against
Radix Select's spurious `''` emission. When the controlled value
transitions from `undefined` to a defined value whose `SelectItem` isn't
mounted yet (dropdown closed → items haven't registered), Radix's hidden
`BubbleSelect` fires `onValueChange('')` and clobbers the field. No
`SelectItem` can have `value=""` (Radix throws), so any `''` is
guaranteed spurious — drop it before calling `field.onChange`.
([radix-ui/primitives#3381](https://github.com/radix-ui/primitives/issues/3381))
- `EditSecretModal.test.tsx` — `getByLabelText` → `findByLabelText`.
Under React 19's scheduling, the decrypted-value query resolves on a
separate render tick, so form fields appear one tick after the skeleton.
- `LogsPreviewer.test.tsx` — `addEventListener('click', spy)` instead of
`loadOlder.onclick = vi.fn()`. React 19 reassigns `.onclick` on managed
elements as part of its event wiring, clobbering the direct-property
spy.
## To test
### Unit tests
- `pnpm --filter studio test` — all unit tests pass on master (React 18)
### Support form URL prefill (Radix Select guard)
- `/support/new?category=Problem` → category dropdown reads "APIs and
client libraries" on first paint
- `/support/new?category=dashboard_bug` → "Dashboard bug"
(case-insensitive match)
- `/support/new?category=invalid_garbage` → falls back to "Select an
issue" placeholder, no crash
- `/support/new?subject=My%20issue&message=Details%20here` → subject and
message inputs are prefilled
- `/support/new?projectRef=<your-ref>&category=Problem` → both project
selector and category set, library selector appears
- With a prefilled URL, click the category dropdown and pick a different
option — the new value sticks (this is the path that surfaced the Radix
bug, want to confirm we didn't break user selection)
- DevTools console on first load should be clean — no React hydration
mismatch warning
### Support form submit (`useStateTransition` success + error branches)
- Submit a valid support form → green toast "Support request sent"
appears **once**, view swaps to the success screen, one `POST
/platform/feedback/send` in the network panel
- Block `POST /platform/feedback/send` in DevTools → submit → red error
toast appears **once** (not twice — if you see two toasts the relaxed
transition is firing more than it should), form stays editable with all
inputs preserved
- Unblock and submit again → success path runs cleanly
### Sidebar support form (same reducer + `useStateTransition`, separate
component)
- Open the support widget in the side nav (`SupportSidebarForm`)
- Repeat the success and error paths — should behave identically
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed category selector to prevent selected values from being
unexpectedly cleared during form interactions.
* **Tests**
* Improved test reliability for modal field rendering and event handling
assertions.
* **Chores**
* Clarified internal comments for form initialization logic.
[](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45784)
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Alaister Young <10985857+alaister@users.noreply.github.com>
