bluetooth - MRAVOutputContext crash ios 11 beta -


is known issue fixed apple final non-beta ios 11 release?
can find mravoutputcontext reference?

from crashlytics crash report: (crash reproduces while starting bluetooth audio, cannot reproduce while in debug)

crashed: com.apple.coremedia.routingcontext.xpc.notifications
exc_bad_access kern_invalid_address 0x0000000fa4a1beb8

#23. crashed: com.apple.coremedia.routingcontext.xpc.notifications 0  libobjc.a.dylib                0x1856f4430 objc_msgsend + 16 1  mediaremote                    0x191826618 -[mravoutputcontext _outputdevicesdidchangenotification:] + 296 2  corefoundation                 0x18615e12c __cfnotificationcenter_is_calling_out_to_an_observer__ + 20 3  corefoundation                 0x18615d6cc _cfxregistrationpost + 420 4  corefoundation                 0x18615d430 ___cfxnotificationpost_block_invoke + 60 5  corefoundation                 0x1861da9f4 -[_cfxnotificationregistrar find:object:observer:enumerator:] + 1408 6  corefoundation                 0x1860943e0 _cfxnotificationpost + 380 7  foundation                     0x186ab1498 -[nsnotificationcenter postnotificationname:object:userinfo:] + 68 8  avfoundation                   0x18ba5beb4 avcmnotificationdispatchercallback + 200 9  corefoundation                 0x18615e12c __cfnotificationcenter_is_calling_out_to_an_observer__ + 20 10 corefoundation                 0x18615d6cc _cfxregistrationpost + 420 11 corefoundation                 0x18615d430 ___cfxnotificationpost_block_invoke + 60 12 corefoundation                 0x1861da9f4 -[_cfxnotificationregistrar find:object:observer:enumerator:] + 1408 13 corefoundation                 0x1860943e0 _cfxnotificationpost + 380 14 corefoundation                 0x1860b758c cfnotificationcenterpostnotification + 132 15 coremedia                      0x1892c6114 cmnotificationcenterpostnotification + 124 16 coremedia                      0x1893c6828 __figxpc_handlenotificationmessage_block_invoke + 164 17 libdispatch.dylib              0x185b51088 _dispatch_call_block_and_release + 24 18 libdispatch.dylib              0x185b51048 _dispatch_client_callout + 16 19 libdispatch.dylib              0x185b5ae48 _dispatch_queue_serial_drain$variant$mp + 528 20 libdispatch.dylib              0x185b5b7d8 _dispatch_queue_invoke$variant$mp + 340 21 libdispatch.dylib              0x185b5c200 _dispatch_root_queue_drain_deferred_wlh$variant$mp + 400 22 libdispatch.dylib              0x185b644a0 _dispatch_workloop_worker_thread$variant$mp + 644 23 libsystem_pthread.dylib        0x185df6fe0 _pthread_wqthread + 932


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