XCode 27b6 XCUITest clone simulators not visible in Device Hub (No Show Parallel Testing Devices)

Question

Created 2w

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Tried to execute our XCUITest test suite with XCode 27b6.

The test plan is set to run in parallel. When executing tests locally with XCode 26, I can see the clone simulators executing the test (which is useful for debugging the test).

With XCode 27b6 and Device Hub, I do not see the clone simulators executing, nor do I see a setting or menu item in Device Hub to show those clone simulators. There is no equivalent to the "Show Parallel Testing Devices" menu item in the XCode 26 sim.

Am I missing something or is this a regression in XCode 27?

Answer 1

OliverDB OP

1w

Same here, even with Xcode 27 RC

Answer 2

WesCampaigne OP

6d

This is listed under Known Issues in the Xcode 27.0 release notes:

"When running parallel testing in simulators, devices may not be visible in Device Hub but are still actively running tests. (176809181)

Workaround: Disable parallelized test runs if you want to watch UI tests executing in simulators."

So hopefully it's fixed in 27.1.

(An alternate workaround that I've found: If you still have Xcode 26 also installed, you can launch the Xcode 26 copy of Simulator.app to view the parallel test simulators, even when it's Xcode 27 that's running the tests.)