False “Content cannot be shown” errors during IDA SDK debugger development

What version of the Codex App are you using (From “About Codex” dialog)?

26.727.11326

What subscription do you have?

ChatGPT Pro Max x20

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

repeatedly received the following error while working on a legitimate local C++ debugger project:

Content cannot be shown

I am developing an IDA Pro Windows local-debugger plugin using the official Hex-Rays/IDA Pro SDK and MCP tools.

I asked Codex to review and improve the stability of the debugger and the process being debugged, especially during long sessions with highly threaded and multi-process applications such as Chrome.

The discussion involved normal debugger-development topics, including:

Trap-flag and single-step handling
0x80000004 single-step exceptions
Hardware-breakpoint handling
Native and WOW64 thread contexts
Thread suspension and resume counts
Dead-thread races
Exception loops
Child-process cleanup
Preventing debugger operations from waiting indefinitely
Reducing crashes in the debugged process

Codex had already identified real stability bugs and was editing the project normally. For example, it found a trap-flag cleanup bug, hardware-breakpoint operations that reported success after thread-context failures, and incorrect WOW64 context handling.

When I asked it to continue checking for stability problems, some responses were replaced with “Content cannot be shown.”

This is a local development project using an official SDK and a locally controlled debugging environment.

What steps can reproduce the bug?

Open the Codex App on Windows.
Open a local C++ project using the official Hex-Rays/IDA Pro SDK.
Ask Codex to review the Windows local-debugger backend for stability problems.
Discuss normal debugger topics such as hardware breakpoints, single-step exceptions, thread contexts, pause/resume behavior, child processes, and crash prevention.
Ask Codex to continue improving stability during long debugging sessions.
Codex may start reviewing and editing the code normally, but a later response is replaced with:

Content cannot be shown

A prompt similar to the one that triggered the issue was:

Improve the stability of the debugger and the debugged process. Check hardware-breakpoint handling, thread-context failures, trap-flag cleanup, exception loops, thread races, child-process cleanup, and problems that could cause a highly threaded process to crash during a long debugging session.

019faa6b-99c4-7ea2-8bb6-26834a4e9b3c

What is the expected behavior?

Codex should continue reviewing and editing the local debugger project normally.

Standard debugger-development terms such as hardware breakpoints, exceptions, thread contexts, process suspension, and crash handling should not cause the response to be hidden when the conversation clearly shows that the work is legitimate local software development.

Additional information

I am Trusted Access for Cyber verified.

Codex itself appeared to understand the request correctly and produced relevant code changes before later responses were hidden. This makes the issue look like a false positive caused by individual technical terms rather than the actual context of the conversation.

The project uses the official Hex-Rays/IDA Pro SDK, C++, CMake, tests, and local MCP tools. The debugger environment and target applications are under my control.