Failing test: Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/lens/drag_and_drop·ts - lens app lens drag and drop tests basic drag and drop should duplicate the column when dragging to empty dimension in the same group

[kibanamachine]

A test failed on a tracked branch

Error: expected [ 'Unique count of @message.raw [1]',
  'Unique count of @message.raw [2]' ] to sort of equal [ 'Unique count of @message.raw',
  'Unique count of @message.raw [1]' ]
    at Assertion.assert (/dev/shm/workspace/parallel/4/kibana/node_modules/@kbn/expect/expect.js:100:11)
    at Assertion.eql (/dev/shm/workspace/parallel/4/kibana/node_modules/@kbn/expect/expect.js:244:8)
    at Context.<anonymous> (test/functional/apps/lens/drag_and_drop.ts:127:94)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at Object.apply (/dev/shm/workspace/parallel/4/kibana/node_modules/@kbn/test/src/functional_test_runner/lib/mocha/wrap_function.js:73:16) {
  actual: '[\n' +
    '  "Unique count of @message.raw [1]"\n' +
    '  "Unique count of @message.raw [2]"\n' +
    ']',
  expected: '[\n  "Unique count of @message.raw"\n  "Unique count of @message.raw [1]"\n]',
  showDiff: true
}

First failure: Jenkins Build

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[spalger]

This started failing PRs on May 28th, the same day that a4f6d43 was merged, could be a coincidence but might not be?

cc @mbondyra