(bug?) Image effect stops working on a perspective camera when another is on top

Hi guys, could someone confirm me if this is an actual bug or not?

I have two cameras, one on top of another, the back camera is using unity’s blur effect and the top one is not, I’m basically mimicking what system for item inspection in skyrim or fallout4. So the top camera only renders one layer where one object is set to be on that layer and everything else is in a layer that the back camera renders and blurs. So the top camera has the flags set to “depth only”. The strange thing is that the blur effect doesn’t actually shows up, as soon as I activate the top camera the blur is gone.

It gets weirder.

If i put the top camera in orthographic mode the effect shows up again o.O

How is this happening? is this a bug?

Multiple cameras and image effects are ‘not in a good state’ currently. @Aras is working on figuring this out as we speak (see his tweet about it here: x.com)

Given the state of it’s it’s really hard to say what the issue is or the correct workaround unless I know your exact setup.

First camera in forward / deferred? If forward is MSAA turned on?
Second camera, forward or deferred?

If the second camera is in deferred changing it to forward may ‘just fix’ any issues (check with MSAA on and off)