How to reproduce

Prerequisites

Run composer install to install all dependencies.

Start symfony local server web : symfony server:start

Cache is configured in config/packages/cache.yaml with filesystem adapter.

Run bug reproduction

Go to the url : https://127.0.0.1:8000/stream to run stream example.
Next go to cache panel profiler corresponding to your request https://127.0.0.1:8000/_profiler/latest?type=request&panel=cache

• cache.app is not present in the panel
• but it's working for http client for example

Expected behavior

If you run home page https://127.0.0.1:8000/ for example, and after to profiler you can see the cache.app in the panel.

• on home page I simulate same cache call than stream page

All code are in controller src/Controller/HomeController.php: