Why am I unable to see Post Process Effects in Scene View

I've added a global volume, I've checked post process effects in scene view, I have a post processing camera, and I have an override, my render pipeline enables post processing, but nothing. This is really getting on my nerves, I've tried about everything. Can someone help?

 

Make sure it's turned-on in the scene view.

 

That didn't help...

 

Also your main camera needs to be enabled in the editor and it also needs to have the built-in MainCamera tag.

 

still, nothing

 

I guess you did find it out in the meantime or threw PP over board.

But I had the same issue and it took me HOURS to get PostProcessing effects to show up in 2020.2 (URP).

I watched ~10 tutorials on setup and had everything checked without success.

Until I played around with Layers, then suddenly the PP effects were drawn both on Scene/Game window.
Note that I did not find any coherent pattern, e.g. camera and PP volume "need to be on same layer". It just worked after switching to different layers, afterwards I could switch back to the previous layer and it still worked.

I assume there is a bug in 2020.2.0b.10.3438 I'm currently using, and it might be on other versions too.

Note that I'm using the newly URP provided Post Processing package, and did not download the Post Processing package from the package manager.

So I hope this helps anyone with the same issue, before going mad.