$request->get may no longer return array as of Symfony 6.0 (BadRequestException)

Confirming this is a problem the patch resolves the issue. Similar to 🐛 [2.0.x] $request->get may no longer return array as of Symfony 6.0 (BadRequestException) Fixed

Thanks a lot for reporting this problem and already providing a patch! (Thanks, also, to @joshmiller for trying it out.)
However, why did you switch from query to request? I think it should stay query, and the code works as expected when I change it accordingly. In contrast, when I use your patch, the error message vanishes, but the “Preserve facets while using filters” functionality doesn’t work as expected anymore.

Please give the attached patch another try, I can commit it if it works for you.

Committed.
Thanks again!

Automatically closed - issue fixed for 2 weeks with no activity.