E2E Tests: Use waitForSelector to wait for sidebar presence #21180
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Fixes #21177
This pull request seeks to resolve an intermittent end-to-end test failure in the Sidebar tests. See #21177 for the full message and initial debugging information. The changes here seek to resolve this by leveraging
waitForSelector
to allow for a delay in the presence of the sidebar which is expected to be shown. It's assumed this will resolve the issue because, as observed by notes in #21177, there appears to be a CPU-bound race condition between the browser resizing and the sidebar showing. While these sorts of delays are not ideal, the use ofwaitForSelector
will prove to be more durable in any case.Testing Instructions:
Ensure end-to-end tests pass: