[silverbackdan]

Fixes #585

Cause

doctrine/orm 3.8.x-dev, commit 13ed8ade (doctrine/orm#12753, "Compare database values to detect unchanged object fields"). Bisected on the NEXT leg's dependencies: everything at dev with only doctrine/orm held at 3.7.3 passes, and swapping ORM's src between that commit and its parent (e635772d) flips the result.

Until 3.7, UnitOfWork::computeChangeSet() compared object fields by identity. TimestampedDataPersister sets modifiedAt to a new \DateTime on every API write, so every write was an UPDATE. From 3.8 the ORM compares the values the column would store. modifiedAt is a datetime (second precision), so a write in the same second as the stored value, with no other field changed, is not an update: nothing is flushed, so PropagateUpdatesListener neither purges nor publishes it.

Both tests write position C (before: A), which the orderer keeps at sortValue 2 (C2 A3 B4). C's only change is modifiedAt, and set-up ran in the same second, so C was not purged (ComponentGroupOrderTest) or published (ComponentMoveTest). With a one-second gap both pass on ORM 3.8.

This is an intended ORM change (documented in its UPGRADE.md), not a regression. The bundle's behaviour is correct: the stored row really is identical, so no cache or subscriber holds stale data.

Change

• ComponentSiteTrait::createGroupWithPositions() sets the created positions' modifiedAt an hour earlier, so a write under test always changes a stored value, as content written earlier than an edit does in practice. No expected value changes.
• CLAUDE.md records the trap; CHANGELOG has a Tooling line.

Test-only: no src/ lines change, so the Infection PR gate has no mutants.

Verified locally: full suite (paratest -p4, 5809 tests) green on the NEXT leg's dev dependencies (Symfony 8.2.x-dev, ORM 3.8.x-dev) and on the stable lock.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.09%. Comparing base (d0436eb) to head (424eac7).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #586   +/-   ##
=========================================
  Coverage     97.09%   97.09%           
  Complexity     5350     5350           
=========================================
  Files           438      438           
  Lines         13837    13837           
=========================================
  Hits          13435    13435           
  Misses          402      402           

Flag	Coverage Δ
phpunit	97.09% <ø> (ø)

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