I have similar issues, and it is definitely related to the use of the simd inverse function (both double4x4 and double3x3).Not fixed in Xcode 11.4 beta. However, for me, it only occurs in debug-mode, not in release-mode.
Darkwing
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Unfortunately, also not fixed in the new xcode beta of today [Version 11.4 beta 2 (11N123k)].
Xcode Version 11.4 beta 3 (11N132i), out today, still has this issue. I have not tried macOS 10.15.4 beta 4, but I assume it is an Xcode issue and not a macOS problem.
Indeed, fixed in macOS 10.15.4 beta 4. Awesome, thanks Apple!