Crash: Assertion failed: ndx < m_size with (ndx, m_size)

#### SDK and version SDK : Cocoa (Cocoa, Java, etc) Version: 20.1.0 #### Observations * How frequent do the crash occur? Idk. * Does it happen in production or during dev/test? Yes. * Can the crash be reproduced by you? No really. * Can you provide instructions for how we can reproduce it? No. #### Crash log / stacktrace /Users/admin/Library/Developer/Xcode/DerivedData/PasswordManager-gboprlrlsfoxpvdsaishpasrgzlu/SourcePackages/checkouts/realm-core/src/realm/array.hpp:722: [realm-core-20.1.0] Assertion failed: ndx < m_size with (ndx, m_size) = [2, 0] 0 RealmSwift 0x0000000104f35488 _ZN5realm4utilL18terminate_internalERNSt3__118basic_stringstreamIcNS1_11char_traitsIcEENS1_9allocatorIcEEEE + 44 1 RealmSwift 0x0000000104f35458 _ZN5realm4util19terminate_with_infoEPKcS2_lS2_OSt16initializer_listINS0_9PrintableEE + 332 2 RealmSwift 0x00000001048dad78 _ZN5realm4util19terminate_with_infoIJRmRKmEEEvPKciS6_S6_DpOT_ + 184 3 RealmSwift 0x00000001048dac50 _ZNK5realm5Array3getEm + 212 4 RealmSwift 0x00000001048daea4 _ZNK5realm5Array20get_as_ref_or_taggedEm + 132 5 RealmSwift 0x0000000104a8215c _ZN5realm5Group18validate_top_arrayERKNS_5ArrayERKNS_9SlabAllocENSt3__18optionalImEENS8_IyEE + 1200 6 RealmSwift 0x0000000104a7ee4c _ZN5realm5Group6attachEmbbmy + 412 7 RealmSwift 0x0000000104a82c90 _ZN5realm5Group13attach_sharedEmmbNS_9VersionIDE + 308 8 RealmSwift 0x0000000104ebff1c _ZN5realm11TransactionC2ENSt3__110shared_ptrINS_2DBEEEPNS_9SlabAllocERNS3_12ReadLockInfoENS3_13TransactStageE + 368 9 RealmSwift 0x0000000104ec02a4 _ZN5realm11TransactionC1ENSt3__110shared_ptrINS_2DBEEEPNS_9SlabAllocERNS3_12ReadLockInfoENS3_13TransactStageE + 60 10 RealmSwift 0x0000000104a1f500 _ZN12_GLOBAL__N_120make_transaction_refIJNSt3__110shared_ptrIN5realm2DBEEEPNS3_9SlabAllocERNS4_12ReadLockInfoENS4_13TransactStageEEEENS2_INS3_11TransactionEEEDpOT_ + 128 11 RealmSwift 0x0000000104a167e4 _ZN5realm2DB10start_readENS_9VersionIDE + 584 12 RealmSwift 0x0000000104be3070 _ZN5realm5_impl16RealmCoordinator19run_async_notifiersEv + 660 13 RealmSwift 0x0000000104be2cfc _ZN5realm5_impl16RealmCoordinator9on_changeEv + 60 14 RealmSwift 0x0000000104b79e80 _ZN5realm5_impl20ExternalCommitHelper6listenEv + 836 15 RealmSwift 0x0000000104b7a66c _ZZN5realm5_impl20ExternalCommitHelperC1ERNS0_16RealmCoordinatorERKNS_11RealmConfigEENK3$_0clEv + 44 16 RealmSwift 0x0000000104b7a60c _ZNSt3__18__invokeB8de190102IZN5realm5_impl20ExternalCommitHelperC1ERNS2_16RealmCoordinatorERKNS1_11RealmConfigEE3$_0JEEEDTclclsr3stdE7declvalIT_EEspclsr3stdE7declvalIT0_EEEEOSA_DpOSB_ + 24 17 RealmSwift 0x0000000104b7a5e8 _ZNSt3__116__thread_executeB8de190102INS_10unique_ptrINS_15__thread_structENS_14default_deleteIS2_EEEEZN5realm5_impl20ExternalCommitHelperC1ERNS7_16RealmCoordinatorERKNS6_11RealmConfigEE3$_0JEJEEEvRNS_5tupleIJT_T0_DpT1_EEENS_15__tuple_indicesIJXspT2_EEEE + 28 18 RealmSwift 0x0000000104b7a2f8 _ZNSt3__114__thread_proxyB8de190102INS_5tupleIJNS_10unique_ptrINS_15__thread_structENS_14default_deleteIS3_EEEEZN5realm5_impl20ExternalCommitHelperC1ERNS8_16RealmCoordinatorERKNS7_11RealmConfigEE3$_0EEEEEPvSH_ + 84 19 libsystem_pthread.dylib 0x0000000100f6108c _pthread_start + 136 20 libsystem_pthread.dylib 0x0000000100f6af4c thread_start + 8 #### Steps & Code to Reproduce <!-- What steps/operations resulted in the crash? Please show any relevant code or steps that WE can <!-- use to reproduce it. Even better is a full sample project that can reproduce the crash. --> <!-- Code and files can be shared privately at help@realm.io if needed. --> Observations: I have two processes - the main app, which uses an encrypted instance of Realm, and an Autofill service that accesses the same database. I believe the issue might be related to encrypted interprocess Realm access.