Failed to find thread 1 for break event

Environment

• Windows 7:
• VS Code - latest:
• C/C++ extension - latest 1.10.7:
• QNX6:
• GDB / LLDB version: GNU gdb 6.8 (rev. 506)

Bug Summary and Steps to Reproduce

Bug Summary:

Trying to debug application from win7 to virtual box machine with QNX6.
Got error
ERROR: Error while trying to enter break state. Debugging will now stop. Failed to find thread 1 for break event

Debugger Configurations

{
            "name": "C++ Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "/home/Projects/PhWidgets/tests/bin/microGUI:microGUI",
            "stopAtEntry": true,
            "cwd": "/home/Projects/PhWidgets/",
            "pipeTransport": {
                "pipeCwd": "C:\\Program Files\\PuTTY",
                "pipeProgram": "C:\\Program Files\\PuTTY\\plink",
                "pipeArgs": [
                    "user@10.0.0.100"
                ],
                "debuggerPath": "/usr/qnx650/host/qnx6/x86/usr/bin/gdb",
            },
            "sourceFileMap": {
                // "remote": "local"
                "/home/Projects/PhWidgets/": "X:\\home\\Projects\\PhWidgets\\"
            },
            "logging": {
                "trace": true,
                "traceResponse": true
            },
            "MIMode": "gdb",
            "targetArchitecture": "x86",
            "setupCommands": [
              {
                "description": "Enable pretty-printing for gdb",
                "text": "-enable-pretty-printing",
                "ignoreFailures": true
              }
            ]
        }

Debugger Logs

--> E (output): {"type":"event","event":"output","body":{"category":"telemetry","output":"VS/Diagnostics/Debugger/Launch","data":{"VS.Diagnostics.Debugger.ImplementationName":"Microsoft.MIDebugEngine","VS.Diagnostics.Debugger.EngineVersion":"17.1.20608.1","VS.Diagnostics.Debugger.HostVersion":"17.1.20608.1","VS.Diagnostics.Debugger.AdapterId":"cppdbg","VS.Diagnostics.Debugger.Launch.Duration":811,"VS.Diagnostics.Debugger.MIMode":"gdb","VS.Diagnostics.Debugger.FrameworkVersion":"6.0.522.21309"}},"seq":2}
--> R (launch-2): {"type":"response","request_seq":2,"success":true,"command":"launch","body":{},"seq":4}
--> E (initialized): {"type":"event","event":"initialized","body":{},"seq":6}
<--   C (setFunctionBreakpoints-3): {"command":"setFunctionBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":3}
--> R (setFunctionBreakpoints-3): {"type":"response","request_seq":3,"success":true,"command":"setFunctionBreakpoints","body":{"breakpoints":[]},"seq":9}
<--   C (setDataBreakpoints-4): {"command":"setDataBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":4}
--> R (setDataBreakpoints-4): {"type":"response","request_seq":4,"success":true,"command":"setDataBreakpoints","body":{"breakpoints":[]},"seq":12}
<--   C (setInstructionBreakpoints-5): {"command":"setInstructionBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":5}
--> R (setInstructionBreakpoints-5): {"type":"response","request_seq":5,"success":true,"command":"setInstructionBreakpoints","body":{"breakpoints":[]},"seq":15}
<--   C (setExceptionBreakpoints-6): {"command":"setExceptionBreakpoints","arguments":{"filters":[],"filterOptions":[]},"type":"request","seq":6}
--> R (setExceptionBreakpoints-6): {"type":"response","request_seq":6,"success":true,"command":"setExceptionBreakpoints","body":{},"seq":18}
<--   C (configurationDone-7): {"command":"configurationDone","type":"request","seq":7}
--> R (configurationDone-7): {"type":"response","request_seq":7,"success":true,"command":"configurationDone","body":{},"seq":21}
--> E (output): {"type":"event","event":"output","body":{"category":"stdout","output":"GNU gdb 6.8 qnx-nto (rev. 506)\nCopyright (C) 2008 Free Software Foundation, Inc.\nLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \"show copying\"\nand \"show warranty\" for details.\nThis GDB was configured as \"i486-pc-nto-qnx6.5.0\".\n"},"seq":23}
GNU gdb 6.8 qnx-nto (rev. 506)
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-pc-nto-qnx6.5.0".
<--   C (threads-8): {"command":"threads","type":"request","seq":8}
--> R (threads-8): {"type":"response","request_seq":8,"success":true,"command":"threads","body":{"threads":[]},"seq":26}
--> E (output): {"type":"event","event":"output","body":{"category":"stdout","output":"[New pid 8519724 tid 1]\n"},"seq":28}
[New pid 8519724 tid 1]
--> E (output): {"type":"event","event":"output","body":{"category":"stderr","output":"ERROR: Error while trying to enter break state. Debugging will now stop. Failed to find thread 1 for break event\r\n"},"seq":30}
ERROR: Error while trying to enter break state. Debugging will now stop. Failed to find thread 1 for break event
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"The program '/home/Projects/PhWidgets/tests/bin/microGUI:microGUI' has exited with code 42 (0x0000002a).\r\n\r\n"},"seq":32}
The program '/home/Projects/PhWidgets/tests/bin/microGUI:microGUI' has exited with code 42 (0x0000002a).
--> E (exited): {"type":"event","event":"exited","body":{"exitCode":42},"seq":34}
--> E (terminated): {"type":"event","event":"terminated","body":{},"seq":36}
--> E (output): {"type":"event","event":"output","body":{"category":"telemetry","output":"VS/Diagnostics/Debugger/DebugCompleted","data":{"VS.Diagnostics.Debugger.ImplementationName":"Microsoft.MIDebugEngine","VS.Diagnostics.Debugger.EngineVersion":"17.1.20608.1","VS.Diagnostics.Debugger.HostVersion":"17.1.20608.1","VS.Diagnostics.Debugger.AdapterId":"cppdbg","VS.Diagnostics.Debugger.DebugCompleted.BreakCounter":0}},"seq":38}
<--   C (disconnect-9): {"command":"disconnect","arguments":{"restart":false},"type":"request","seq":9}
--> R (disconnect-9): {"type":"response","request_seq":9,"success":true,"command":"disconnect","body":{},"seq":41}

No source files or tests are named. Start by reproducing the QNX6 remote launch with the shown pipeTransport configuration, then inspect the GDB/MI log around the empty threads response and the subsequent tid 1 event. Done means determining why the break event cannot find thread 1 and verifying the debugger no longer stops at that point.