Codex app (new ChatGpt app) broken after big update

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

Version 26.707.31428

What subscription do you have?

Free

What platform is your computer?

Darwin 24.6.0 arm64 arm

What issue are you seeing?

After the latest update, i was getting this error :

Invalid Value: 'tools.namespace'. User-defined namespace 'image_gen' collides with an existing tool namespace.
````

i changed my config.toml with these : 

[features]
apps = true
hooks = true
terminal_resize_reflow = true
memories = true
external_migration = true
goals = true
prevent_idle_sleep = true
fast_mode = true
js_repl = false
imagegen = true
imagegenext = false

X-OpenAI-Internal-Codex-Responses-Lite only supports function tools, custom tools, and client-executed tool search.


I was using custom hosted models on azure, seems it doesn't work anymore ? 

config.toml

model = "gpt-5.6-sol"
model_provider = "azure"
model_reasoning_effort = "medium"
personality = "pragmatic"

notify = ["/Users/rafikbelkadi/.codex/computer-use/Codex Computer Use.app/Contents/SharedSupport/SkyComputerUseClient.app/Contents/MacOS/SkyComputerUseClient", "turn-ended"]
service_tier = "default"

[model_providers.azure]
name = "Azure"
base_url = "https://y-ai-resource.cognitiveservices.azure.com/openai"
env_key = "AZURE_OPENAI_API_KEY"
requires_openai_auth = true
query_params = { api-version = "2025-04-01-preview" }
wire_api = "responses"
service_tier = "default"

### What steps can reproduce the bug?

just try to use a custom model i guess ?

### What is the expected behavior?

ability to choose my custom models, and have it work properly like it previously did

### Additional information

_No response_