FB11341701 - We've hit and identified this issue during some of the early beta phases. It's quite baffling that it wasn't prioritized as a required fix for the release itself as it's insanely obvious in scaled projects (not sure of the performance evaluations Apple runs internally when making core changes).
There's also some threads open on Twitter noting other's experiences here. I only hope some Apple engineers on the appropriate team pop their heads in as I haven't seen any mention of this issue on any known issue reports for Xcode updates/betas.
Topic:
Developer Tools & Services
SubTopic:
Xcode
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