NotepadNext v0.12.0 randomly crashes with EXC_BAD_ACCESS (SIGSEGV) on macOS 26.2 when interacting with UI

Operating System and Version

Operating System and Version: macOS 26.2 (25C56) (Darwin Kernel Version 25.2.0) Hardware Model: MacBookPro16,1 (Intel)

Distribution

dmg

Description

The operating system is a standard installation upgraded to the latest public release (macOS 26.2). NotepadNext was installed from the official NotepadNext-v0.12.dmg downloaded from GitHub Releases. System Integrity Protection (SIP) is currently disabled on this machine (as indicated in the crash report), which might be a relevant factor. randomly crashes with EXC_BAD_ACCESS

Steps to Reproduce

2. insall open crashes

Debug Information

Translated Report (Full Report Below)

Process: NotepadNext [20330] Path: /Applications/NotepadNext.app/Contents/MacOS/NotepadNext Identifier: io.github.dail8859.NotepadNext Version: 0.12.0 (???) Code Type: X86-64 (Native) Role: Foreground Parent Process: launchd [1] Coalition: io.github.dail8859.NotepadNext [1523] User ID: 502

Date/Time: 2026-01-14 11:30:52.7598 +0800 Launch Time: 2026-01-14 11:30:49.6635 +0800 Hardware Model: MacBookPro16,1 OS Version: macOS 26.2 (25C56) Release Type: User Bridge OS Version: 10.2 (23P2048)

Crash Reporter Key: F3E4DBB8-A2F2-D1C9-0B42-B6DBBFFD76D5 Incident Identifier: 75A7EE8D-D4FB-471D-BE05-5D7E519BC5C7

Sleep/Wake UUID: 878B8C6E-3DF0-463C-954F-2C142F491A84

Time Awake Since Boot: 24000 seconds Time Since Wake: 8970 seconds

System Integrity Protection: disabled

Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11 Terminating Process: exc handler [20330]

VM Region Info: 0 is not in any region. Bytes before following region: 4495101952 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START --->
__TEXT 10bedd000-10c3cd000 [ 5056K] r-x/r-x SM=COW /Applications/NotepadNext.app/Contents/MacOS/NotepadNext

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 QtWidgets 0x10d8f5974 QWidget::hide() + 4 1 QtWidgets 0x10da42aaf 0x10d898000 + 1747631 2 QtWidgets 0x10da424d9 0x10d898000 + 1746137 3 QtWidgets 0x10d8d79ad QLayoutPrivate::doResize() + 205 4 QtWidgets 0x10d8d805a QLayout::activate() + 1338 5 QtWidgets 0x10d8a6f88 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 216 6 QtWidgets 0x10d8a7dcc QApplication::notify(QObject*, QEvent*) + 508 7 QtCore 0x10e721a1a QCoreApplication::notifyInternal2(QObject*, QEvent*) + 170 8 QtCore 0x10e722bec QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 1468 9 libqcocoa.dylib 0x10cd3ccd6 0x10cd25000 + 97494 10 libqcocoa.dylib 0x10cd3d70d 0x10cd25000 + 100109 11 CoreFoundation 0x7ff8057e255d CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 12 CoreFoundation 0x7ff8057e24ff __CFRunLoopDoSource0 + 157 13 CoreFoundation 0x7ff8057e22ba __CFRunLoopDoSources0 + 203 14 CoreFoundation 0x7ff8057e0fd0 __CFRunLoopRun + 916 15 CoreFoundation 0x7ff805893830 _CFRunLoopRunSpecificWithOptions + 496 16 HIToolbox 0x7ff81216246f RunCurrentEventLoopInMode + 287 17 HIToolbox 0x7ff81216554b ReceiveNextEventCommon + 606 18 HIToolbox 0x7ff8122edec7 _BlockUntilNextEventMatchingListInMode + 37 19 AppKit 0x7ff809b28d9c _DPSBlockUntilNextEventMatchingListInMode + 172 20 AppKit 0x7ff80962e67d _DPSNextEvent + 800 21 AppKit 0x7ff80a1cebba -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1268 22 AppKit 0x7ff80a1ce68d -[NSApplication(NSEventRouting) nextEventMatchingMask:untilDate:inMode:dequeue:] + 67 23 AppKit 0x7ff809625d04 -[NSApplication run] + 472 24 libqcocoa.dylib 0x10cd3c127 0x10cd25000 + 94503 25 QtCore 0x10e72b486 QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) + 486 26 QtCore 0x10e722007 QCoreApplication::exec() + 119 27 NotepadNext 0x10c1d8932 main + 994 28 dyld 0x7ff80536c781 start + 3457

Thread 1:

Thread 2:

Thread 3:

Thread 4:

Thread 5:: com.apple.NSEventThread 0 libsystem_kernel.dylib 0x7ff8056ffb4e mach_msg2_trap + 10 1 libsystem_kernel.dylib 0x7ff80570df4c mach_msg2_internal + 83 2 libsystem_kernel.dylib 0x7ff805706ba3 mach_msg_overwrite + 574 3 libsystem_kernel.dylib 0x7ff8056ffe47 mach_msg + 19 4 CoreFoundation 0x7ff8057e269f __CFRunLoopServiceMachPort + 145 5 CoreFoundation 0x7ff8057e1186 __CFRunLoopRun + 1354 6 CoreFoundation 0x7ff805893830 _CFRunLoopRunSpecificWithOptions + 496 7 AppKit 0x7ff8096d4141 _NSEventThread + 158 8 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 9 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 6:: com.apple.CFSocket.private 0 libsystem_kernel.dylib 0x7ff8057089ce __select + 10 1 CoreFoundation 0x7ff8057f921c __CFSocketManager + 671 2 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 3 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 7:: Thread (pooled) 0 libsystem_kernel.dylib 0x7ff8057026fa __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff8057432f6 _pthread_cond_wait + 988 2 QtCore 0x10e8c001c 0x10e6b4000 + 2146332 3 QtCore 0x10e8bfcce 0x10e6b4000 + 2145486 4 QtCore 0x10e8bfc1e QWaitCondition::wait(QMutex*, QDeadlineTimer) + 94 5 QtCore 0x10e8b9ff5 0x10e6b4000 + 2121717 6 QtCore 0x10e8b5a93 0x10e6b4000 + 2103955 7 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 8 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 8:: Thread (pooled) 0 libsystem_kernel.dylib 0x7ff8057026fa __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff8057432f6 _pthread_cond_wait + 988 2 QtCore 0x10e8c001c 0x10e6b4000 + 2146332 3 QtCore 0x10e8bfcce 0x10e6b4000 + 2145486 4 QtCore 0x10e8bfc1e QWaitCondition::wait(QMutex*, QDeadlineTimer) + 94 5 QtCore 0x10e8b9ff5 0x10e6b4000 + 2121717 6 QtCore 0x10e8b5a93 0x10e6b4000 + 2103955 7 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 8 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 9:: Thread (pooled) 0 libsystem_kernel.dylib 0x7ff8057026fa __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff8057432f6 _pthread_cond_wait + 988 2 QtCore 0x10e8c001c 0x10e6b4000 + 2146332 3 QtCore 0x10e8bfcce 0x10e6b4000 + 2145486 4 QtCore 0x10e8bfc1e QWaitCondition::wait(QMutex*, QDeadlineTimer) + 94 5 QtCore 0x10e8b9ff5 0x10e6b4000 + 2121717 6 QtCore 0x10e8b5a93 0x10e6b4000 + 2103955 7 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 8 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 10:: Thread (pooled) 0 libsystem_kernel.dylib 0x7ff8057026fa __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff8057432f6 _pthread_cond_wait + 988 2 QtCore 0x10e8c001c 0x10e6b4000 + 2146332 3 QtCore 0x10e8bfcce 0x10e6b4000 + 2145486 4 QtCore 0x10e8bfc1e QWaitCondition::wait(QMutex*, QDeadlineTimer) + 94 5 QtCore 0x10e8b9ff5 0x10e6b4000 + 2121717 6 QtCore 0x10e8b5a93 0x10e6b4000 + 2103955 7 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 8 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 11:: QFileInfoGatherer 0 libsystem_kernel.dylib 0x7ff8057026fa __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff8057432f6 _pthread_cond_wait + 988 2 QtCore 0x10e8bfcab 0x10e6b4000 + 2145451 3 QtCore 0x10e8bfc1e QWaitCondition::wait(QMutex*, QDeadlineTimer) + 94 4 QtGui 0x10e31d9ed QFileInfoGatherer::run() + 125 5 QtCore 0x10e8b5a93 0x10e6b4000 + 2103955 6 libsystem_pthread.dylib 0x7ff805742e4d _pthread_start + 115 7 libsystem_pthread.dylib 0x7ff80573e857 thread_start + 15

Thread 0 crashed with X86 Thread State (64-bit): rax: 0x0000000000000001 rbx: 0x000000000000004f rcx: 0x0000600003c868e0 rdx: 0x0000000000000000 rdi: 0x0000000000000000 rsi: 0x0000000000000000 rbp: 0x00007ff7b4020720 rsp: 0x00007ff7b4020720 r8: 0x0000600003c868f0 r9: 0x0000000000000154 r10: 0x0000000043000000 r11: 0x000000000000000c r12: 0x0000000000000000 r13: 0x0000600003c23f60 r14: 0x00007fe8c7809c00 r15: 0x00007fe8c780a348 rip: 0x000000010d8f5974 rfl: 0x0000000000010297 cr2: 0x0000000000000000

Logical CPU: 2 Error Code: 0x00000004 (no mapping for user data read) Trap Number: 14

Binary Images: 0x10bedd000 - 0x10c3ccfff io.github.dail8859.NotepadNext (0.12.0) <00971b4e-a5c7-35e8-b680-723b820c0970> /Applications/NotepadNext.app/Contents/MacOS/NotepadNext 0x10c5cf000 - 0x10c616fff org.qt-project.QtPrintSupport (6.5) /Applications/NotepadNext.app/Contents/Frameworks/QtPrintSupport.framework/Versions/A/QtPrintSupport 0x10d898000 - 0x10dd53fff org.qt-project.QtWidgets (6.5) <3e44be92-656a-3a29-a34b-77978abaa8cf> /Applications/NotepadNext.app/Contents/Frameworks/QtWidgets.framework/Versions/A/QtWidgets 0x10dea4000 - 0x10e58bfff org.qt-project.QtGui (6.5) <96e855d8-77e4-3c6a-8da2-66868327cd70> /Applications/NotepadNext.app/Contents/Frameworks/QtGui.framework/Versions/A/QtGui 0x10c90c000 - 0x10ca23fff org.qt-project.QtNetwork (6.5) <79dabe6f-c23a-3efc-a97d-7695d8a83b17> /Applications/NotepadNext.app/Contents/Frameworks/QtNetwork.framework/Versions/A/QtNetwork 0x10c4e4000 - 0x10c59bfff org.qt-project.QtCore5Compat (6.5) <879d95b8-c64e-3f84-9038-b30e3b116942> /Applications/NotepadNext.app/Contents/Frameworks/QtCore5Compat.framework/Versions/A/QtCore5Compat 0x10e6b4000 - 0x10ebc3fff org.qt-project.QtCore (6.5) <17a43ae8-6656-30c2-b272-d8e5ca1ed515> /Applications/NotepadNext.app/Contents/Frameworks/QtCore.framework/Versions/A/QtCore 0x10c78f000 - 0x10c816fff org.qt-project.QtDBus (6.5) /Applications/NotepadNext.app/Contents/Frameworks/QtDBus.framework/Versions/A/QtDBus 0x10c734000 - 0x10c74afff com.apple.security.csparser (3.0) <404883b4-3af3-342e-9d88-558953df5a1e> /System/Library/Frameworks/Security.framework/Versions/A/PlugIns/csparser.bundle/Contents/MacOS/csparser 0x10cd25000 - 0x10cdc4fff libqcocoa.dylib () <8cc64a51-dd79-3456-8dc6-a25556091c6b> /Applications/NotepadNext.app/Contents/PlugIns/platforms/libqcocoa.dylib 0x10cd0a000 - 0x10cd16fff libobjc-trampolines.dylib () <8d2e5b7d-52e0-3831-b24e-172b47813386> /usr/lib/libobjc-trampolines.dylib 0x10d673000 - 0x10d69afff libqmacstyle.dylib () /Applications/NotepadNext.app/Contents/PlugIns/styles/libqmacstyle.dylib 0x10d620000 - 0x10d627fff libqgif.dylib () <1e0dd52e-1828-38a5-99fd-a9dcb7a3a99c> /Applications/NotepadNext.app/Contents/PlugIns/imageformats/libqgif.dylib 0x10d5f6000 - 0x10d5fdfff libqico.dylib () <3ef55435-5e0c-3e2e-bc47-e08df9a41073> /Applications/NotepadNext.app/Contents/PlugIns/imageformats/libqico.dylib 0x10d6b3000 - 0x10d75afff libqjpeg.dylib () <4d22a765-0aaa-3705-af2c-a51ba14f427b> /Applications/NotepadNext.app/Contents/PlugIns/imageformats/libqjpeg.dylib 0x7ff805783000 - 0x7ff805c3e7cb com.apple.CoreFoundation (6.9) <301acc8a-6054-303d-910f-6b52ceb949f6> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation 0x7ff8120bc000 - 0x7ff81239a227 com.apple.HIToolbox (2.1.1) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox 0x7ff80960d000 - 0x7ff80ae07dc4 com.apple.AppKit (6.9) /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit 0x7ff805366000 - 0x7ff805403167 dyld () <759d71bc-86dc-3d9c-a062-86fc312218ea> /usr/lib/dyld 0x0 - 0xffffffffffffffff ??? () <00000000-0000-0000-0000-000000000000> ??? 0x7ff8056ff000 - 0x7ff80573c917 libsystem_kernel.dylib () /usr/lib/system/libsystem_kernel.dylib 0x7ff80573d000 - 0x7ff805749027 libsystem_pthread.dylib () <920c9bb7-cc5c-3c2c-bb42-bacb3608a18a> /usr/lib/system/libsystem_pthread.dylib

External Modification Summary: Calls made by other processes targeting this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by all processes on this machine: task_for_pid: 0 thread_create: 0 thread_set_state: 0

VM Region Summary: ReadOnly portion of Libraries: Total=1.3G resident=0K(0%) swapped_out_or_unallocated=1.3G(100%) Writable regions: Total=2.1G written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=2.1G(100%)

                            VIRTUAL   REGION 

REGION TYPE SIZE COUNT (non-coalesced) =========== ======= ======= Accelerate framework 128K 1 Activity Tracing 256K 1 CG image 2052K 1 ColorSync 4K 1 CoreAnimation 412K 47 CoreGraphics 12K 2 CoreServices 620K 2 CoreUI image data 1092K 9 Foundation 16K 1 Kernel Alloc Once 8K 1 MALLOC 2.1G 88 MALLOC guard page 72K 18 STACK GUARD 56.0M 12 Stack 13.6M 12 VM_ALLOCATE 628K 13 __CTF 824 1 __DATA 42.7M 995 __DATA_CONST 117.6M 1035 __DATA_DIRTY 8318K 866 __FONT_DATA 2352 1 __INFO_FILTER 8 1 __LINKEDIT 160.1M 16 __OBJC_RO 64.3M 1 __OBJC_RW 2569K 2 __TEXT 1.2G 1047 __TEXT (graphics) 6720K 6 __TPRO_CONST 4K 1 dyld private memory 128K 1 mapped file 745.4M 83 shared memory 1316K 19 =========== ======= ======= TOTAL 4.4G 4284

Full Report

{"app_name":"NotepadNext","timestamp":"2026-01-14 11:30:58.00 +0800","app_version":"0.12.0","slice_uuid":"00971b4e-a5c7-35e8-b680-723b820c0970","build_version":"","platform":1,"bundleID":"io.github.dail8859.NotepadNext","share_with_app_devs":0,"is_first_party":0,"bug_type":"309","os_version":"macOS 26.2 (25C56)","roots_installed":0,"name":"NotepadNext","incident_id":"75A7EE8D-D4FB-471D-BE05-5D7E519BC5C7"} { "uptime" : 24000, "procRole" : "Foreground", "version" : 2, "userID" : 502, "deployVersion" : 210, "modelCode" : "MacBookPro16,1", "coalitionID" : 1523, "osVersion" : { "train" : "macOS 26.2", "build" : "25C56", "releaseType" : "User" }, "captureTime" : "2026-01-14 11:30:52.7598 +0800", "codeSigningMonitor" : 0, "incident" : "75A7EE8D-D4FB-471D-BE05-5D7E519BC5C7", "pid" : 20330, "cpuType" : "X86-64", "procLaunch" : "2026-01-14 11:30:49.6635 +0800", "procStartAbsTime" : 24693837635191, "procExitAbsTime" : 24696933053917, "procName" : "NotepadNext", "procPath" : "/Applications/NotepadNext.app/Contents/MacOS/NotepadNext", "bundleInfo" : {"CFBundleShortVersionString":"0.12.0","CFBundleIdentifier":"io.github.dail8859.NotepadNext"}, "storeInfo" : {"deviceIdentifierForVendor":"954AECEB-E177-5C85-872B-4B46B3B0C66F","thirdParty":true}, "parentProc" : "launchd", "parentPid" : 1, "coalitionName" : "io.github.dail8859.NotepadNext", "crashReporterKey" : "F3E4DBB8-A2F2-D1C9-0B42-B6DBBFFD76D5", "appleIntelligenceStatus" : {"reasons":["deviceNotCapable"],"state":"unavailable"}, "developerMode" : 1, "codeSigningID" : "", "codeSigningTeamID" : "", "codeSigningValidationCategory" : 0, "codeSigningTrustLevel" : 4294967295, "codeSigningAuxiliaryInfo" : 0, "bootSessionUUID" : "22A3458C-F2F1-4078-9A36-A9D2650050D2", "wakeTime" : 8970, "bridgeVersion" : {"build":"23P2048","train":"10.2"}, "sleepWakeUUID" : "878B8C6E-3DF0-463C-954F-2C142F491A84", "sip" : "disabled", "vmRegionInfo" : "0 is not in any region. Bytes before following region: 4495101952\n REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 10bedd000-10c3cd000 [ 5056K] r-x/r-x SM=COW /Applications/NotepadNext.app/Contents/MacOS/NotepadNext", "exception" : {"codes":"0x0000000000000001, 0x0000000000000000","rawCodes":[1,0],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x0000000000000000"}, "termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"exc handler","byPid":20330}, "vmregioninfo" : "0 is not in any region. Bytes before following region: 4495101952\n REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 10bedd000-10c3cd000 [ 5056K] r-x/r-x SM=COW /Applications/NotepadNext.app/Contents/MacOS/NotepadNext", "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},