Flaky test: Activity Center Escape case times out under CI load

[Pixnop]

Summary

tests/renderer-dom/activityCenter.test.tsx > "Activity Center keyboard reach" > "closes on Escape and hands focus back to the trigger" fails intermittently on the runners with AssertionError: expected <div role="region" ...> to be null, after taking more than 5 seconds. Reran on the same commit, it passes.

Why it matters

The failure takes the whole test-matrix leg red, which then fails the test aggregator and makes sonarcloud fail on a missing coverage artefact. Three red checks on a pull request that has nothing wrong with it, and a rerun every time.

Evidence

• Run 35022783792 on fb299c60 (pull request One launch path, one filter object, one task runner #501): ubuntu leg red, the case took 5196 ms.
• Run 35023079391, same commit, all green.
• The same case flaked on the windows leg earlier the same day during Publish checksums and VirusTotal scans with every release #495.

What to look at

The assertion waits for the region to disappear after Escape. The panel plays an exit animation, so the region survives the default 1 second waitFor when the runner is loaded, the way discardToast did before #428 raised its timeout to 5 seconds. Either wait for the element to be removed with a timeout sized on the animation, or assert on what Escape controls rather than on the node being gone. Check the sibling cases in that file for the same shape.

Acceptance

• The case no longer depends on an animation finishing within an arbitrary window.
• Ten consecutive runs of the file under CPU load stay green.
• Any sibling case with the same shape gets the same treatment.