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Update: We can profile using the Allocations instrument, but not the Leaks instrument.My company's app cannot be run under instruments (the leaks instrument, specifically). We have tried:* Xcode 11* Xcode 11 beta* Various simulators* Debug build* Release build* Rebooting the machine* Trying on various machinesThis is under Mojave 10.14.6No matter what I do, the result is identical. The app works fine if I debug with Xcode, but if I launch with instruments it sticks at the launch screen. When I attach the debugger to the process and pause, I get this backtrace:Thread 1 Queue : com.apple.main-thread (serial) #0 0x0000000119b9e88a in syscall_thread_switch () #1 0x000000010b5df237 in _OSSpinLockLockYield () #2 0x000000010b5c123b in dyld::notifyBatchPartial(dyld_image_states, bool, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), bool, bool) () #3 0x000000010b5c9e85 in ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, bool, ImageLoader::RPathChain const&, char const*) () #4 0x000000010b5c1c86 in dyld::link(ImageLoader*, bool, bool, ImageLoader::RPathChain const&, unsigned int) () #5 0x000000010b5c5f88 in dlopen_internal () #6 0x00007fff5198a9ed in dlopen () #7 0x00007fff50b1484a in imp_implementationWithBlock () #8 0x000000010b6635df in _swapMethods () #9 0x000000010b664b13 in _willInitializeClass () #10 0x00007fff50b01ea9 in initializeNonMetaClass () #11 0x00007fff50b01cc2 in initializeNonMetaClass () #12 0x00007fff50b01cc2 in initializeNonMetaClass () #13 0x00007fff50b024ba in initializeAndMaybeRelock(objc_class*, objc_object*, mutex_tt&, bool) () #14 0x00007fff50b0ca5d in lookUpImpOrForward () #15 0x00007fff50afd219 in _objc_msgSend_uncached () #16 0x000000010b5c1695 in dyld::notifyBatchPartial(dyld_image_states, bool, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), bool, bool) () #17 0x000000010b5ca024 in ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, bool, ImageLoader::RPathChain const&, char const*) () #18 0x000000010b5c1c86 in dyld::link(ImageLoader*, bool, bool, ImageLoader::RPathChain const&, unsigned int) () #19 0x000000010b5c5f88 in dlopen_internal () #20 0x00007fff5198a9ed in dlopen () #21 0x00007fff50b1484a in imp_implementationWithBlock () #22 0x000000010b6635df in _swapMethods () #23 0x000000010b664b13 in _willInitializeClass () #24 0x00007fff50b021d4 in _objc_addWillInitializeClassFunc () #25 0x000000010b664ae1 in ___enumerateClasses_block_invoke () #26 0x00007fff519477b9 in _dispatch_client_callout () #27 0x00007fff519489e5 in _dispatch_once_callout () #28 0x000000010b663216 in _enumerateClasses () #29 0x000000010b662f4c in ___AllocationsSetup_block_invoke_2 () #30 0x00007fff519477b9 in _dispatch_client_callout () #31 0x00007fff519489e5 in _dispatch_once_callout () #32 0x000000010b662ec1 in ___AllocationsSetup_block_invoke () #33 0x000000010b661d70 in _AllocationsSetup () #34 0x000000010b6618dc in __OAInit () #35 0x000000010b5d03a7 in ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) () #36 0x000000010b5d07b8 in ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) () #37 0x000000010b5cb9a2 in ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) () #38 0x000000010b5ca7a6 in ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) () #39 0x000000010b5ca846 in ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) () #40 0x000000010b5bf046 in dyld::initializeMainExecutable() () #41 0x000000010b5c30fc in dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) () #42 0x000000010b5be1cd in start_sim () #43 0x0000000119b62234 in dyld::useSimulatorDyld(int, macho_header const*, char const*, int, char const**, char const**, char const**, unsigned long*, unsigned long*) () #44 0x0000000119b600ce in dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) () #45 0x0000000119b5b503 in dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) () #46 0x0000000119b5b036 in _dyld_start ()Has anybody seen anything like this?