Closed
Description
Symfony version(s) affected
5.4.0
Description
Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelResponse() listener is registered twice in test environment.
Our tests for controllers where we set NO_AUTO_CACHE_CONTROL_HEADER flag started failing, because the flag is reset on the first call of onKernelResponse and the subsequent call overwrites the previously set headers.
How to reproduce
It works fine on 5.3:
$ symfony new symfonysessionlistenertest53 --version="5.3.x@dev" --full
$ cd symfonysessionlistenertest53
$ symfony console debug:event --env=test
"kernel.response" event
-----------------------
....
#11 Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelResponse() -1000
...But is registered twice on 5.4:
$ symfony new symfonysessionlistenertest54 --version="5.4.x@dev" --full
$ cd symfonysessionlistenertest54
$ symfony console debug:event --env=test
"kernel.response" event
-----------------------
...
#10 Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelResponse() -1000
#11 Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelResponse() -1000
...Possible Solution
No response
Additional Context
Note: The listener is set only once in dev and prod envs.
I guess that the issue may be related to #41390.