Unexpected action "Show" on Big Sur

[sergei-dyshel]

When running this command:

 /usr/local/bin/alerter -message Msg -title title -subtitle subtitle -closeLabel close_label -dropdownlabel drop -actions one,two,three -json -timeout 10

action list in the notification contains Show item, clicking it leads to exception:

2021-11-19 23:53:54.519 alerter[58872:14756858] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndexedSubscript:]: index 9223372036854775807 beyond bounds [0 .. 2]'
*** First throw call stack:
(
        0   CoreFoundation                      0x00007fff2066f1db __exceptionPreprocess + 242
        1   libobjc.A.dylib                     0x00007fff203a8d92 objc_exception_throw + 48
        2   CoreFoundation                      0x00007fff20725e0a _CFThrowFormattedException + 202
        3   CoreFoundation                      0x00007fff205e3140 +[NSNull null] + 0
        4   alerter                             0x000000010ae176e5 -[AppDelegate userNotificationCenter:didActivateNotification:] + 540
        5   Foundation                          0x00007fff2142bf63 -[_NSConcreteUserNotificationCenter _sendDelegateMessage:sendToAppDelegate:withObject:] + 118
        6   Foundation                          0x00007fff215e891a -[_NSConcreteUserNotificationCenter _notificationClickedMessage:] + 460
        7   Foundation                          0x00007fff213de9b2 __54-[_NSConcreteUserNotificationCenter _serverConnection]_block_invoke_4 + 49
        8   libdispatch.dylib                   0x00007fff20352623 _dispatch_call_block_and_release + 12
        9   libdispatch.dylib                   0x00007fff20353806 _dispatch_client_callout + 8
        10  libdispatch.dylib                   0x00007fff2035fb4f _dispatch_main_queue_callback_4CF + 940
        11  CoreFoundation                      0x00007fff20631f18 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
        12  CoreFoundation                      0x00007fff205f4112 __CFRunLoopRun + 2755
        13  CoreFoundation                      0x00007fff205f2f8c CFRunLoopRunSpecific + 563
        14  HIToolbox                           0x00007fff2883aa83 RunCurrentEventLoopInMode + 292
        15  HIToolbox                           0x00007fff2883a7e5 ReceiveNextEventCommon + 587
        16  HIToolbox                           0x00007fff2883a583 _BlockUntilNextEventMatchingListInModeWithFilter + 70
        17  AppKit                              0x00007fff22dfc172 _DPSNextEvent + 864
        18  AppKit                              0x00007fff22dfa945 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1364
        19  AppKit                              0x00007fff22decc69 -[NSApplication run] + 586
        20  alerter                             0x000000010ae1882a main + 147
        21  libdyld.dylib                       0x00007fff20518f3d start + 1
)
libc++abi: terminating with uncaught exception of type NSException