I ran into the same error in Xcode 14.3.1. I managed to at least download crashes for the main app by choosing either "All Apps" or "iOS App" instead of "All Products". It seems in my case the error is caused by attempting to download crashes for extensions.
Thomas localsearch
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@viewhero I can confirm the same issue about the slow response from getEnabledStatusForExtension and error in the first call. I tested it with iOS 14.5 beta 4 and 5. I reported it as FB9053044 and also referred to your Feedback number.
Hmm I'm not sure then if we have the same issue after all. For me I don't have issues when opening/editing the storyboard with Xcode 12. But we're actually embedding a UITabBarController inside a UISplitViewController as the primary vc.
I just ran into this as well with Xcode 12 beta 4. As in your case it worked in the earlier betas (not sure if I tested beta 3). In our case the exception happens on runtime, so I cannot start the app. Do you only have the issue for editing the storyboard?