Anyone else seeing a lot more "Class X is implemented in both ..." warnings on Xcode 27 than on Xcode 26? Same source, same flags, the count goes from a handful to a couple thousand, and some now correlate with real crashes (cast failures, missing protocol conformances) instead of the usual harmless first-wins behavior.
Is this a known change in Swift 6.4 / Xcode 27? Is there a new flag I should be passing? Any suggestions welcome.